Blender Git Loki

Fix T64312: Selection inconsistencies when switching collections

Basically layer_collection_sync was calling BKE_base_eval_flags right away while
iterating over the bases.

However when a parent/sibling collection is to influence the collection flag of
an object that exists in more than one collection, it is too late since we
deselect the object in BKE_base_eval_flags right away.

Related to T64312.

Reviewers: sergey, brecht

Differential Revision: https://developer.blender.org/D5243