Please bring back KDE Plasma Global Menu support

[dssharma2309]

The only reason for me sticking with Firefox via Waterfox was because of the Global Menu support provide by Waterfox, Please add the KDE Global Menu Patch (Canonical Patch) to the new Waterfox 6.5.x versions as it was earlier ones.

[hawkeye116477]

It looks like duplicate of #3535.
@dssharma2309 You need to disable Wayland to make it working, cuz Canonical never updated it for Wayland support. Previously it worked, cuz Wayland wasn't enabled by default 😄.

MOZ_ENABLE_WAYLAND=0 waterfox