The code around view transform selection accidentally got too coupled
to the scene. However, the file output settings do not have scene, so
the enumerator getter was crashing.
Caused by 7ceb4495c5.
This patch brings the code closer to the Blender 4.4 behavior by
maintaining a global from view name to an ID.
There is still a bug in the code which displays views from the active
scene's display settings in the override panel. This is because the
itemf() callback is hardcoded to use the display settings from the
active scene (via bContext). However, this issue exists since the
initial commit of the color management override option.
Pull Request: https://projects.blender.org/blender/blender/pulls/140729