Blender Git Loki

Fix T71798: Full Copy Scene produce Orphan Data objects.

Never treat one of those horrorible 'IDs that are not real IDs' as
regular ID, and expect ID management code to do so. Unless there is a
very good reason, one should never explicitely pass those fake IDs to ID
management code directly.

In that specific case, user count is sort of 'disabled' in libquery
code, because master collections are not in bmain (`LIB_TAG_NO_MAIN`).