Caused by 40ac21e5a5 [does not remember/resore the previous ScrArea &
ARegion anymore].
Without this, the operator reporting might get confused by using the
wrong area/region, so added back
NOTE: I tried to just notify `NC_SPACE | ND_SPACE_INFO_REPORT` in
`screen_opengl_render_end` (same as in `wm_operator_finished` >
`wm_operator_register`), but to no avail...
Think this is quite good pratice to leave us with the original area/
region anyways though.
Thx @brecht for improvements (restoring in `screen_opengl_render_init`
already, also taking care of restoring in some early out cases)
Co-authored-by: Brecht Van Lommel <brecht@blender.org>
Pull Request: https://projects.blender.org/blender/blender/pulls/135394