compatibility fix for overriding context

[Jerakin]

Quitting with unsaved changes causes crash in 4.0 and higher.

[hannesdelbeke]

hi, this looks good.
i'd like to test it. Since there's no linked issue, could you give some info please?

• what is the error you get from the crash?
• how to repro it. just close an unsaved scene?
• versions. blender 4.0, is that pyside6? and what bqt version

[Jerakin]

Happens in 4.0 and above due to how overriding context works.

Repro is

Using Blender 4.0 and above (not tested 5.0 but assume it would crash there too)

• Open Blender
• Make a change (if you have default cube just move it)
• Press window [X] button to exit blender.
• In the dialog chose to save your local changes
• Result is the stacktrace

Traceback (most recent call last):
  File "projects\bqt\bqt\ui\quit_dialogue.py", line 24, in execute
    bpy.ops.wm.save_mainfile({"window": bpy.context.window_manager.windows[0]}, 'INVOKE_AREA', check_existing=False)
  File "blender\4.2.14\4.2\scripts\modules\bpy\ops.py", line 106, in __call__
    C_exec, C_undo = _BPyOpsSubModOp._parse_args(args)
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "blender\4.2.14\4.2\scripts\modules\bpy\ops.py", line 60, in _parse_args
    raise ValueError("1-2 args execution context is supported")
ValueError: 1-2 args execution context is supported
Error: Python: Traceback (most recent call last):
  File "projects\bqt\bqt\ui\quit_dialogue.py", line 24, in execute
    bpy.ops.wm.save_mainfile({"window": bpy.context.window_manager.windows[0]}, 'INVOKE_AREA', check_existing=False)
  File "blender\4.2.14\4.2\scripts\modules\bpy\ops.py", line 106, in __call__
    C_exec, C_undo = _BPyOpsSubModOp._parse_args(args)
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "blender\4.2.14\4.2\scripts\modules\bpy\ops.py", line 60, in _parse_args
    raise ValueError("1-2 args execution context is supported")
ValueError: 1-2 args execution context is supported

[Jerakin]

Do note that #130 fixes the same issue in a different location, as there was already an PR for it I didn't re-implement it here. But that should also be accepted if this PR is accepted.

[hannesdelbeke]

just merged 130 in

[hannesdelbeke]

managed to repro issue, seems indeed same as 130

[hannesdelbeke]

tested, this PR now triggers the save dialogue as expected.
this is a major PR since it could potentially lose user's save data!

thanks a lot