REF: Replace QVariant::Type with QMetaType::Type for Qt compatibility

Update all references from `QVariant::Type` to `QMetaType::Type`
across the generated files for improved alignment with Qt's data
type handling.

Author: hjmjohnson

generator/typesystem_core.xml

@@ -230,7 +230,7 @@
   <primitive-type name="unsigned long"/>
   <primitive-type name="WId"/>
   <primitive-type name="Qt::HANDLE"/>
-  <primitive-type name="QVariant::Type"/>
+  <primitive-type name="QMetaType::Type"/>
   <primitive-type name="QByteRef"/>
   <primitive-type name="QBitRef"/>
   <primitive-type name="QBool"/>

src/PythonQtMisc.h

@@ -75,7 +75,7 @@
 #else
 
 #define PythonQtArgumentFrame_ADD_VARIANT_VALUE_BY_ID(store, id, ptr) \
-  PythonQtArgumentFrame_ADD_VARIANT_VALUE(store, QVariant::Type(id), ptr)
+  PythonQtArgumentFrame_ADD_VARIANT_VALUE(store, QMetaType::Type(id), ptr)
 
 #endif
 
@@ -94,7 +94,7 @@
 #else
 
 #define PythonQtArgumentFrame_ADD_VARIANT_VALUE_BY_ID_IF_NEEDED(alreadyAllocatedPtr,store, id, ptr) \
-  PythonQtArgumentFrame_ADD_VARIANT_VALUE_IF_NEEDED(alreadyAllocatedPtr,store, QVariant::Type(id), ptr)
+  PythonQtArgumentFrame_ADD_VARIANT_VALUE_IF_NEEDED(alreadyAllocatedPtr,store, QMetaType::Type(id), ptr)
 
 #endif