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