Renaming a Sequencer spawnable actor in the World Outliner will revert on save

Renaming a Sequencer spawnable actor in the World Outliner will revert back to the old name on save.

Not a regression because Sequencer spawnable actors in 4.16 didn't show in the World Outliner.

User Description:

Renaming Sequencer Spawned Actor hides the change

The Name change is not saved. However, if you use Convert to Possessable, the name change is indeed there.

So to rename a Spawned actor in the Sequencer, one must workaround with a Convert to Possessable and Convert to Spawnable back again. However, if the Actor uses Attaching, this will corrupt its Transform, which is another long standing Sequencer bug.

1. Open a new blank project
2. Create an actor class BP > Place it into the level
3. Toolbar > Cinematics > Add Level Sequence
4. In the Sequencer tab, Add Track > Add the newly created BP > Right-click BP > Convert to Spawnable
5. Back in the editor > Content Browser > Rename the BP
6. Save the level

Results: The renamed BP will revert back to it's original name

Expected: For either the renamed BP to also be renamed in Sequencer or the BP is unable to be renamed in the World Outliner at all.