mpvqt: rebuild for Qt 6.11.1, fix segfault on wayland

[slymattz]

Testing the changes

• I tested the changes in this PR: YES

Without the rebuild haruna segfaults with the following output on wayland (xwayland works, though):

$ haruna 
ATTENTION: default value of option vblank_mode overridden by environment.
unknown() : Native interface revision mismatch (requested 1 / available 2) for interface QWaylandApplication

[1]    26255 segmentation fault  haruna

Local build testing

• I built this PR locally for my native architecture: x86_64-glibc