Fix #135355: ops.render.opengl() in the console wont return {'FINISHED'}

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

source/blender/editors/render/render_opengl.cc

@@ -693,6 +693,8 @@ static bool screen_opengl_render_init(bContext *C, wmOperator *op)
   WorkSpace *workspace = CTX_wm_workspace(C);
 
   Scene *scene = CTX_data_scene(C);
+  ScrArea *prev_area = CTX_wm_area(C);
+  ARegion *prev_region = CTX_wm_region(C);
   GPUOffScreen *ofs;
   OGLRender *oglrender;
   int sizex, sizey;
@@ -716,6 +718,12 @@ static bool screen_opengl_render_init(bContext *C, wmOperator *op)
     return false;
   }
 
+  if (!is_animation && is_write_still && BKE_imtype_is_movie(scene->r.im_format.imtype)) {
+    BKE_report(
+        op->reports, RPT_ERROR, "Cannot write a single file with an animation format selected");
+    return false;
+  }
+
   if (is_sequencer) {
     is_view_context = false;
   }
@@ -732,12 +740,6 @@ static bool screen_opengl_render_init(bContext *C, wmOperator *op)
     }
   }
 
-  if (!is_animation && is_write_still && BKE_imtype_is_movie(scene->r.im_format.imtype)) {
-    BKE_report(
-        op->reports, RPT_ERROR, "Cannot write a single file with an animation format selected");
-    return false;
-  }
-
   /* stop all running jobs, except screen one. currently previews frustrate Render */
   WM_jobs_kill_all_except(wm, CTX_wm_screen(C));
 
@@ -756,6 +758,8 @@ static bool screen_opengl_render_init(bContext *C, wmOperator *op)
 
   if (!ofs) {
     BKE_reportf(op->reports, RPT_ERROR, "Failed to create OpenGL off-screen buffer, %s", err_out);
+    CTX_wm_area_set(C, prev_area);
+    CTX_wm_region_set(C, prev_region);
     return false;
   }
 
@@ -850,6 +854,9 @@ static bool screen_opengl_render_init(bContext *C, wmOperator *op)
     }
   }
 
+  CTX_wm_area_set(C, prev_area);
+  CTX_wm_region_set(C, prev_region);
+
   return true;
 }