- Renamed some "FileReference ProjectName" to "FileReference ProjectFile"
- Passing in "null" for a lot of UnrealExe params, instead of "UnrealEditor-Cmd", so allow GetEditorForProject to be called (we must still allow for a true override, so we can't get rid of the param)
- Added FileSystemReference.Exists
#rb David.Harvey
[CL 31660211 by josh adams in ue5-main branch]
This represents UE4/Main @18073326, Release-5.0 @18081140 and Dev-PerfTest @18045971
[CL 18081471 by aurel cordonnier in ue5-release-engine-test branch]
#ROBOMERGE-SOURCE: CL 17056403 in //UE5/Main/...
#ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v850-17047176)
[CL 17056411 by jonathan adamczewski in ue5-release-engine-test branch]