[Interchange] Ensure when re-importing an asset that was import with a blueprint pipeline

The issue is in UInterchangeAssetImportData::ProcessPipelinesCache()

The following iteration do not find blueprint pipeline, not sure about python pipeline, it need to be test.

TMap<FString, UClass*> ClassPerName;
for (FThreadSafeObjectIterator It(UClass::StaticClass()); It; ++It)
{
    UClass* Class = Cast<UClass>(*It);
    if (Class->IsChildOf(UInterchangePipelineBase::StaticClass()))
    {
        ClassPerName.Add(Class->GetFullName(), Class);
    }
} 

Make sure you have a blueprint pipeline set when you import animation only
Import a skeletal mesh
Import some animations
Re-import those animation

RESULT:
An ensure is popping when getting the re-import data pipeline (building pipeline cached)

[Inline Frame] UnrealEditor-InterchangeEngine.dll!UInterchangeAssetImportData::ProcessPipelinesCache::__l21::<lambda_2>::operator()() Line 423
    at D:\P4\FN\Main\Engine\Source\Runtime\Interchange\Engine\Private\InterchangeAssetImportData.cpp(423)
UnrealEditor-InterchangeEngine.dll!UInterchangeAssetImportData::ProcessPipelinesCache() Line 423
    at D:\P4\FN\Main\Engine\Source\Runtime\Interchange\Engine\Private\InterchangeAssetImportData.cpp(423)
UnrealEditor-InterchangeEngine.dll!UInterchangeAssetImportData::GetPipelines() Line 291
    at D:\P4\FN\Main\Engine\Source\Runtime\Interchange\Engine\Private\InterchangeAssetImportData.cpp(291)
UnrealEditor-InterchangeEngine.dll!UInterchangeManager::ImportInternal(const FString & ContentPath, const UInterchangeSourceData * SourceData, const FImportAssetParameters & ImportAssetParameters, const UE::Interchange::EImportType ImportType) Line 2007
    at D:\P4\FN\Main\Engine\Source\Runtime\Interchange\Engine\Private\InterchangeManager.cpp(2007)
UnrealEditor-InterchangeEngine.dll!UInterchangeManager::ImportAssetAsync(const FString & ContentPath, const UInterchangeSourceData * SourceData, const FImportAssetParameters & ImportAssetParameters) Line 1706
    at D:\P4\FN\Main\Engine\Source\Runtime\Interchange\Engine\Private\InterchangeManager.cpp(1706)
UnrealEditor-UnrealEd.dll!FReimportManager::ReimportAsync(UObject * Obj, bool bAskForNewFileIfMissing, bool bShowNotification, FString PreferredReimportFile, FReimportHandler * SpecifiedReimportHandler, int SourceFileIndex, bool bForceNewFile, bool bAutomated, bool bInForceShowDialog) Line 478
    at D:\P4\FN\Main\Engine\Source\Editor\UnrealEd\Private\Editor.cpp(478)
UnrealEditor-UnrealEd.dll!FReimportManager::ReimportMultiple(TArrayView<UObject *,int> Objects, bool bAskForNewFileIfMissing, bool bShowNotification, FString PreferredReimportFile, FReimportHandler * SpecifiedReimportHandler, int SourceFileIndex, bool bForceNewFile, bool bAutomated) Line 788
    at D:\P4\FN\Main\Engine\Source\Editor\UnrealEd\Private\Editor.cpp(788)
UnrealEditor-UnrealEd.dll!FReimportManager::ValidateAllSourceFileAndReimport(TArray<UObject *,TSizedDefaultAllocator<32>> & ToImportObjects, bool bShowNotification, int SourceFileIndex, bool bForceNewFile, bool bAutomated) Line 727
    at D:\P4\FN\Main\Engine\Source\Editor\UnrealEd\Private\Editor.cpp(727)
UnrealEditor-ContentBrowserAssetDataSource.dll!FAssetFileContextMenu::ExecuteReimport(int SourceFileIndex) Line 1230
    at D:\P4\FN\Main\Engine\Plugins\Editor\ContentBrowser\ContentBrowserAssetDataSource\Source\ContentBrowserAssetDataSource\Private\AssetFileContextMenu.cpp(1230)
[External Code]
[Inline Frame] UnrealEditor-Slate.dll!TDelegate<void __cdecl(void),FDefaultDelegateUserPolicy>::ExecuteIfBound() Line 635
    at D:\P4\FN\Main\Engine\Source\Runtime\Core\Public\Delegates\DelegateSignatureImpl.inl(635)
UnrealEditor-Slate.dll!FUIAction::Execute() Line 139
    at D:\P4\FN\Main\Engine\Source\Runtime\Slate\Public\Framework\Commands\UIAction.h(139)
UnrealEditor-Slate.dll!SMenuEntryBlock::OnClicked(bool bCheckBoxClicked) Line 1179
    at D:\P4\FN\Main\Engine\Source\Runtime\Slate\Private\Framework\MultiBox\SMenuEntryBlock.cpp(1179)
UnrealEditor-Slate.dll!SMenuEntryBlock::OnMenuItemButtonClicked() Line 1130
    at D:\P4\FN\Main\Engine\Source\Runtime\Slate\Private\Framework\MultiBox\SMenuEntryBlock.cpp(1130)
[External Code]
[Inline Frame] UnrealEditor-Slate.dll!TDelegate<FReply __cdecl(void),FDefaultDelegateUserPolicy>::Execute() Line 614
    at D:\P4\FN\Main\Engine\Source\Runtime\Core\Public\Delegates\DelegateSignatureImpl.inl(614)
UnrealEditor-Slate.dll!SButton::ExecuteOnClick() Line 467
    at D:\P4\FN\Main\Engine\Source\Runtime\Slate\Private\Widgets\Input\SButton.cpp(467)
UnrealEditor-Slate.dll!SButton::OnMouseButtonUp(const FGeometry & MyGeometry, const FPointerEvent & MouseEvent) Line 392
    at D:\P4\FN\Main\Engine\Source\Runtime\Slate\Private\Widgets\Input\SButton.cpp(392)
UnrealEditor-Slate.dll!SMenuEntryButton::OnMouseButtonUp(const FGeometry & MyGeometry, const FPointerEvent & MouseEvent) Line 446
    at D:\P4\FN\Main\Engine\Source\Runtime\Slate\Private\Framework\MultiBox\SMenuEntryBlock.cpp(446)
UnrealEditor-Slate.dll!FSlateApplication::RoutePointerUpEvent::__l8::<lambda_2>::operator()(const FArrangedWidget & TargetWidget, const FPointerEvent & Event) Line 5367
    at D:\P4\FN\Main\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp(5367)
UnrealEditor-Slate.dll!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,`FSlateApplication::RoutePointerUpEvent'::`8'::<lambda_2>>(FSlateApplication * ThisApplication, FEventRouter::FToLeafmostPolicy RoutingPolicy, FPointerEvent EventCopy, const FSlateApplication::RoutePointerUpEvent::__l8::<lambda_2> & Lambda, ESlateDebuggingInputEvent DebuggingInputEvent) Line 456
    at D:\P4\FN\Main\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp(456)
UnrealEditor-Slate.dll!FSlateApplication::RoutePointerUpEvent(const FWidgetPath & WidgetsUnderPointer, const FPointerEvent & PointerEvent) Line 5353
    at D:\P4\FN\Main\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp(5353)
UnrealEditor-Slate.dll!FSlateApplication::ProcessMouseButtonUpEvent(const FPointerEvent & MouseEvent) Line 5938
    at D:\P4\FN\Main\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp(5938)
UnrealEditor-Slate.dll!FSlateApplication::OnMouseUp(const EMouseButtons::Type Button, const UE::Math::TVector2<double> CursorPos) Line 5894
    at D:\P4\FN\Main\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp(5894)
UnrealEditor-ApplicationCore.dll!FWindowsApplication::ProcessDeferredMessage(const FDeferredWindowsMessage & DeferredMessage) Line 3050
    at D:\P4\FN\Main\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsApplication.cpp(3050)
UnrealEditor-ApplicationCore.dll!FWindowsApplication::DeferMessage(TSharedPtr<FWindowsWindow,1> & NativeWindow, HWND__ * InHWnd, unsigned int InMessage, unsigned __int64 InWParam, __int64 InLParam, int MouseX, int MouseY, unsigned int RawInputFlags) Line 3568
    at D:\P4\FN\Main\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsApplication.cpp(3568)
UnrealEditor-ApplicationCore.dll!FWindowsApplication::ProcessMessage(HWND__ * hwnd, unsigned int msg, unsigned __int64 wParam, __int64 lParam) Line 2723
    at D:\P4\FN\Main\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsApplication.cpp(2723)
[Inline Frame] UnrealEditor-ApplicationCore.dll!WindowsApplication_WndProc(HWND__ *) Line 1714
    at D:\P4\FN\Main\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsApplication.cpp(1714)
UnrealEditor-ApplicationCore.dll!FWindowsApplication::AppWndProc(HWND__ * hwnd, unsigned int msg, unsigned __int64 wParam, __int64 lParam) Line 1720
    at D:\P4\FN\Main\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsApplication.cpp(1720)
[External Code]
[Inline Frame] UnrealEditor-ApplicationCore.dll!WinPumpMessages() Line 116
    at D:\P4\FN\Main\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsPlatformApplicationMisc.cpp(116)
UnrealEditor-ApplicationCore.dll!FWindowsPlatformApplicationMisc::PumpMessages(bool bFromMainLoop) Line 145
    at D:\P4\FN\Main\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsPlatformApplicationMisc.cpp(145)
UnrealEditor.exe!FEngineLoop::Tick() Line 5856
    at D:\P4\FN\Main\Engine\Source\Runtime\Launch\Private\LaunchEngineLoop.cpp(5856)
[Inline Frame] UnrealEditor.exe!EngineTick() Line 60
    at D:\P4\FN\Main\Engine\Source\Runtime\Launch\Private\Launch.cpp(60)
UnrealEditor.exe!GuardedMain(const wchar_t * CmdLine) Line 187
    at D:\P4\FN\Main\Engine\Source\Runtime\Launch\Private\Launch.cpp(187)
UnrealEditor.exe!LaunchWindowsStartup(HINSTANCE__ * hInInstance, HINSTANCE__ * hPrevInstance, char * __formal, int nCmdShow, const wchar_t * CmdLine) Line 267
    at D:\P4\FN\Main\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp(267)
UnrealEditor.exe!WinMain(HINSTANCE__ * hInInstance, HINSTANCE__ * hPrevInstance, char * pCmdLine, int nCmdShow) Line 335
    at D:\P4\FN\Main\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp(335)
[External Code]