Only default QtQuick items are available in component library when editing subcomponent

To repro:

• Create new project
• Add some modules that provide item library items, such as QtQuick3D and QtQuick.Studio.Effects
• Add Component to scene
• Make sure component has a child item
• Select component and press F2 to enter sub component editing

--> Component library only shows the items specified in default quick.metainfo. All items coming from other modules are not shown, though the modules themselves are shown.