Fix build if QtQml was built with -no-qml-debug
I cross-compiling for the recently released Arm Morello boards and the QtQml debugger is not yet compatible with CHERI-enabled architectures so I had to build QtQml with -no-qml-debug.
I cross-compiling for the recently released Arm Morello boards and the QtQml debugger is not yet compatible with CHERI-enabled architectures so I had to build QtQml with -no-qml-debug.