a2b014ccbf
When cycling through window sizes, we should skip any sizes that are
bigger than the available area. We do that, but the current code
assumes that the possible sizes are sorted, which is no longer the
case since the addition of "phone" sizes in commit 5b43d4733c.
As a result, we may now skip sizes that would fit perfectly fine.
Address this by filtering out invalid sizes beforehand instead of
assuming a certain order (wich no longer work due to the addition
of a portrait format).
https://gitlab.gnome.org/GNOME/gnome-shell-extensions/merge_requests/97