Overview breaks if extension is disabled

[mzur]

The overview seems to break if the extension is disabled and the overview override was enabled.

[ebeem]

pretty sure this wasn't happening, it seems like this bug happened at some point while cleaning.

[mzur]

You're right, this was introduced by 30c0d78. However, the reset of the workspace layout is completely valid and can't be done any other way. Maybe it's related to #180. If the overview is not reset properly, maybe it can't handle the single row workspace layout.

[ebeem]

Dec 16 18:01:44 ebeem gnome-shell[2521]: ../mutter/clutter/clutter/clutter-actor.c:9241: Actor '<unnamed>[<Gjs_ui_workspaceThumbnail_ThumbnailsBox>:0x55e790f08160]' tried to allocate a size of 924.00 x -1061.00
Dec 16 18:01:44 ebeem gnome-shell[2521]: ../mutter/clutter/clutter/clutter-actor.c:9241: Actor '<unnamed>[<Gjs_ui_workspaceThumbnail_ThumbnailsBox>:0x55e79304b220]' tried to allocate a size of 924.00 x -1061.00
Dec 16 18:01:44 ebeem gnome-shell[2521]: ../mutter/clutter/clutter/clutter-actor.c:9241: Actor '<unnamed>[<Gjs_ui_workspaceThumbnail_ThumbnailsBox>:0x55e78def9600]' tried to allocate a size of 924.00 x -1035.00
Dec 16 18:01:44 ebeem gnome-shell[2521]: ../mutter/clutter/clutter/clutter-actor.c:9241: Actor '<unnamed>[<Gjs_ui_workspaceThumbnail_ThumbnailsBox>:0x55e790f08160]' tried to allocate a size of 924.00 x -1061.00
Dec 16 18:01:44 ebeem gnome-shell[2521]: ../mutter/clutter/clutter/clutter-actor.c:9241: Actor '<unnamed>[<Gjs_ui_workspaceThumbnail_ThumbnailsBox>:0x55e79304b220]' tried to allocate a size of 924.00 x -1061.00

error log to help investigate the problem more, sounds related to #180