ARM build niggle on OSX 15.3.x

[dirkx]

Describe the bug Failing to build on OSX 15.3.2 @ arm

Expected behavior

Build

To Reproduce

Git clone; qmake6; make

Additional context

Simply setting the variables to just arm64 (retiring x86)

       EXPORT_VALID_ARCHS = arm64
       EXPORT_DEFAULT_ARCHS = arm64

fixes the builds.