Platform-specific defines not picked up by Intellisense

With the way PLATFORM_XSX, PLATFORM_PS5 etc. are defined, it seems intellisense doesn't know about them, because the .vcxproj only references the Win64 version of Definitions.h, and they are defined to 1 in the platform-specific Definitions.h. They are not added to the list of defined macros.

This effectively breaks intellisense on platform-specific code.

Dec-2023 - Updated for behavior observed in 5.4

Old: Note that intellisense breaks on a lot of current platform-specific code due to not picking these defines up.

Updated:

1. Have Visual Studio configured as IDE
2. Have the correct SDK for a Platform Extension Platform
3. GenerateProjectFiles
4. Open the generated solution file
5. Set the Build Configuration settings to your Platform & Target
6. Build your Target in the desired configuration
7. Browse the files in the solution that should be valid for your configuration

Result:
Many intellisense errors

Expected:
No false positive intellisense errors