Converting an Actor to spawnable/possessable in Sequencer makes it lose its position in the Track Panel.

Converting an Actor to spawnable/possessable in a Sequence causes it lose its position in the track panel. If the Actor was in a folder it will need to be added back to that folder.

This was reported and tested in 4.21 (CL-4541578). This was reproduced in 4.20.3 (CL-4369336) and Main 4.22 (CL-4568836)

1. Open the UE4 Editor and create a Third Person project
2. Create a Level Sequence and add a few folders to it
3. Add the ThirdPersonCharacter to the Sequence and add it to one of the folders
4. Right-click on ThirdPersonCharacter and convert it to spawnable/possessable

Results: Actor is converted to spawnable and looses its organized position in the sequencer.

Expected: The actor is converted and stays in its given location/folder structure in sequencer.