Blueprint actors can not be casted until they have been opened after migration or being upgraded to a more recent engine version

This is not a regression tested in //UE5/Release-5.0 CL20979098

After migrating an asset from an older engine version or upgrading a project to newer version Blueprints carried over can not be casted until they have been opened or placed in the view port.

1. Create a new Blank project in 5.0.3
2. Create a new Blueprint Actor named 'BP_Test'
3. Compile, save, and close the blueprint
4. Save the project then close it
5. Launch 5.1 Editor then open the 5.0.3 project choosing Open A Copy
6. Create a new Blueprint Actor
7. Drag off the Other Actor output pin on the Event ActorBeginOverlap node
8. Disable Context Sensitive
9. Search for cast to BP_Test

Expected Results:
Cast To BP_Test node shows up.

Actual Results:
BP_Test isn't visible until the BP_Test is compiled.