Using spaces in Event Dispatcher names cause Nativize Blueprints to fail to build

project fails to build when event dispatchers have spaces in their name when using the nativize blueprint asset feature

1. Open the first person template
2. Open project settings
3. Under packaging, enable nativize blueprint asset
4. Open the first person character blueprint
5. Add an event dispatcher
6. Name it "Up to Date"
7. Save and compile
8. Build for Windows 64 bit
9. Notice the project fails to build
10. Open the first person character blueprint again
11. Remove the spaces from "Up to Date" (will be come "UptoDate")
12. Build again
13. Notice the build completes

Expected: The user would receive an error telling them not to use spaces or the build would not fail
Result: The project fails to build when event dispatchers have spaces in their name