wayland: Fix wayland windows growing after toggling decorations

After the decoration is destroyed, we need to resize XdgToplevelClient
to ensure that the scheduled configure event will have correct size.

As is, xdg-toplevel configure events are delayed. When it's actually the
time to send a configure event, XdgToplevelClient will compute the
requested client size from the moveResizeGeometry().

If the moveResizeGeometry() still includes window decorations, the
window will get bigger.

BUG: 444119
(cherry picked from commit 09952e1d)