Revert changes from main commits that were merged into blender-v4.1-release

The last good commit was f57e4c5b98.

After this one more fix was committed, this one is preserved as well:
67bd678887.

tests/python/bl_animation_fcurves.py

@@ -3,7 +3,7 @@
 # SPDX-License-Identifier: GPL-2.0-or-later
 
 """
-blender -b --factory-startup --python tests/python/bl_animation_fcurves.py -- --testdir /path/to/tests/data/animation
+blender -b -noaudio --factory-startup --python tests/python/bl_animation_fcurves.py -- --testdir /path/to/tests/data/animation
 """
 
 import pathlib