macOS running crash due to Qt exception

[lugt]

Symptom:
building the openage on macOS, found out that it failed during running.

Environment:
OS: macOS Tahoe 26.3
CPU: Apple Silicon M3 Pro
Compiler:

NAME: NSInternalInconsistencyException
REASON: API misuse: setting the main menu on a non-main thread.
Main menu contents should only be modified from the main thread.
LOG:*** Assertion failure in -[NSMenu _setMenuName:], NSMenu.m:833

[lugt]

Fixed in #1812 , and fixed the infinite loop issue in #1813

[TheJJ]

i've opened #1821 for the "real" fix for this :)