Accommodate more space for new shapes in Qt::CursorShape in Qt 7

Currently, the Qt::CursorShape enum can accommodate only two new shapes
because Qt::LastCursor must be less than Qt::BitmapCursor.

The cursor shapes change rarely but it would be nice to keep them open
for extension in order to be able to react to new UI/UX ideas if needed.

Change-Id: I53ed9d742a09bb06bab73a906643c62a77a207b0
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>

src/corelib/global/qnamespace.h

@@ -1185,8 +1185,13 @@ namespace Qt {
         DragMoveCursor,
         DragLinkCursor,
         LastCursor = DragLinkCursor,
+#if QT_VERSION < QT_VERSION_CHECK(7, 0, 0)
         BitmapCursor = 24,
-        CustomCursor = 25
+        CustomCursor = 25,
+#else
+        BitmapCursor = 0x100,
+        CustomCursor = 0x101,
+#endif
     };
 
     enum TextFormat {