NOTE: This is committed to the 3.3 branch as decided by Bastien, Dalai
and me. That is because these are important usability fixes/improvements
to have for the LTS release.
Part of T95802.
Showing properties with an RNA path in the UI isn't very user friendly.
Instead, represent the RNA path as a tree, merging together parts of the
RNA path that are shared by multiple properties. Properties and "groups"
(RNA structs/pointers) are now shown with their UI name and an icon if
any. The actually overridden properties still show the Library Overrides
icon. See the patch for screenshots.
Also: When a RNA collection item, like a modifier or constraint was
added via a library override, indicate that item and show all collection
items in the list, since the complete list of items and their orders may
be important context.
Differential Revision: https://developer.blender.org/D15606
d2a30abff0