File order of CMake project can break compilation due to QMetaTypeId<T> specialization

// obj1.h
#ifndef OBJ1_H
#define OBJ1_H

#include <QObject>

class Obj1 : public QObject
{
    Q_OBJECT
    Q_PROPERTY(QObjectList objs MEMBER m_objs)

private:
    QObjectList m_objs;
};

#endif // OBJ1_H


// obj2.h
#ifndef OBJ2_H
#define OBJ2_H

#include <QQmlContext>

class Obj2 : public QObject
{
    Q_OBJECT
};

#endif // OBJ2_H

[1/3 6.0/sec] Automatic MOC for target appSimpleApp
[2/3 1.4/sec] Building CXX object CMakeFiles\appSimpleApp.dir\appSimpleApp_autogen\mocs_compilation.cpp.obj
FAILED: CMakeFiles/appSimpleApp.dir/appSimpleApp_autogen/mocs_compilation.cpp.obj 
C:\PROGRA~2\MIB055~1\2019\COMMUN~1\VC\Tools\MSVC\1429~1.301\bin\HostX64\x64\cl.exe  /nologo /TP -DQT_CORE_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_OPENGL_LIB -DQT_QMLINTEGRATION_LIB -DQT_QMLMODELS_LIB -DQT_QML_DEBUG -DQT_QML_LIB -DQT_QUICK_LIB -DUNICODE -DWIN32 -DWIN64 -D_ENABLE_EXTENDED_ALIGNED_STORAGE -D_UNICODE -D_WIN64 -ID:\SimpleApp\build-SimpleApp-Desktop_Qt_6_3_0_MSVC2019_64bit-Debug\appSimpleApp_autogen\include -IC:\Qt\6.3.0\msvc2019_64\include\QtCore -IC:\Qt\6.3.0\msvc2019_64\include -IC:\Qt\6.3.0\msvc2019_64\mkspecs\win32-msvc -IC:\Qt\6.3.0\msvc2019_64\include\QtQuick -IC:\Qt\6.3.0\msvc2019_64\include\QtGui -IC:\Qt\6.3.0\msvc2019_64\include\QtQml -IC:\Qt\6.3.0\msvc2019_64\include\QtQmlIntegration -IC:\Qt\6.3.0\msvc2019_64\include\QtNetwork -IC:\Qt\6.3.0\msvc2019_64\include\QtQmlModels -IC:\Qt\6.3.0\msvc2019_64\include\QtOpenGL /DWIN32 /D_WINDOWS /GR /EHsc /Zi /Ob0 /Od /RTC1 -MDd -Zc:__cplusplus -permissive- -utf-8 -std:c++17 /showIncludes /FoCMakeFiles\appSimpleApp.dir\appSimpleApp_autogen\mocs_compilation.cpp.obj /FdCMakeFiles\appSimpleApp.dir\ /FS -c D:\SimpleApp\build-SimpleApp-Desktop_Qt_6_3_0_MSVC2019_64bit-Debug\appSimpleApp_autogen\mocs_compilation.cpp
C:\Qt\6.3.0\msvc2019_64\include\QtQml\qqmlcontext.h(111): error C2908: explicit specialization; 'QMetaTypeId<T>' has already been instantiated
        with
        [
            T=Ty
        ]
C:\Qt\6.3.0\msvc2019_64\include\QtQml\qqmlcontext.h(111): error C2766: explicit specialization; 'QMetaTypeId<T>' has already been defined
        with
        [
            T=Ty
        ]
C:\Qt\6.3.0\msvc2019_64\include\QtCore/qmetatype.h(1145): note: see previous definition of 'QMetaTypeId<QList<QObject *> >'