- Track Move Actors to prevent discarding changes
- Track deleted packages through move operations so they get saved when committing Level instance
- Do not prompt for save anymore when committing existing Level instance
- Consolidate package save/delete tracking inside new LevelInstanceEditorObject
#rb richard.malo
#preflight 61d439b05b6f9bf2e698c4bb
#ROBOMERGE-AUTHOR: patrick.enfedaque
#ROBOMERGE-SOURCE: CL 18507029 in //UE5/Release-5.0/... via CL 18507031
#ROBOMERGE-BOT: STARSHIP (Release-Engine-Staging -> Release-Engine-Test) (v899-18417669)
[CL 18507032 by patrick enfedaque in ue5-release-engine-test branch]