graphics/qt6-wayland: Add patch to fix crashes of Plasma-on-Wayland when right-clicking the desktop
Tested by: makc, Kenneth Raplee <kenrap@kennethraplee.com>
Pull Request: https://github.com/freebsd/freebsd-ports/pull/431
(cherry picked from commit 6298df5c8c1fcc6db0e93613a86c579d63f6273c)