createWgpuSurface() calls wgpu_macos_attach_metal_layer() in the Q_OS_MAC
branch at the top of the file, but the only #include of MetalSurface_mac.h
sat ~450 lines below the call site, so macOS builds failed with 'use of
undeclared identifier'. The header self-guards on __APPLE__, so move the
include up into the early platform block next to <Windows.h>; the lone
call site is the sole consumer, so the late include was dead.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Dion Moult
e9e944f77a