Files
UnrealEngineUWP/Engine/Source/Runtime/MovieScene
max chen a5e5572416 Sequencer: Destroying a spawned object should mark cleaning up so that the sequence package doesn't mark itself dirty
This is similar to 24472100 #jira UE-178446 which was to address the package getting marked dirty when closing the sequence.

- Tested that making modifications to a spawnable, still invoke OnObjectModified and cause the sequence to be marked dirty.
- Tested that making no modifications to spawnables, closing the sequence or saving the sequence, do NOT cause the sequence to be marked dirty.

#jira UE-191733
#rb andrew.rodham, mike.zyracki, david.bromberg

[CL 27073224 by max chen in ue5-main branch]
2023-08-14 12:06:34 -04:00
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