Daily doesn't build with QGC_DISABLE_PX4_PLUGIN and QGC_DISABLE_PX4_PLUGIN_FACTORY set to ON

[rubenp02]

Expected Behavior

QGC should build normally without PX4 support.

Current Behavior

The following build time error appears:

...\src\Comms\MockLink\MockLink.h(16): fatal error C1083: Can't open included file: 'px4_custom_mode.h': No such file or directory

Steps to Reproduce:

1. Set-up build normally.
2. Set QGC_DISABLE_PX4_PLUGIN and QGC_DISABLE_PX4_PLUGIN_FACTORY (not sure which one is the actual culprit) to ON in CustomOptions.cmake or elsewhere.
3. Attempt to build

System Information

• Operating System: Windows 11
• QGC Version: master
• QGC Build: daily