LibOverride resync process would not properly 'make local' newly created overrides (copied from their linked reference). The main consequence was that some linked data used by these new liboverrides would not be properly tagged as directly linked. While this would not be an issue in current codebase, this was breaking upcomming readfile undo refactor, since some linked data did not get their local 'placeholder reference' data written in memfile blendfiles. NOTE: this is more of a quick fix, whole handling of library data in complex copying cases like that need some more general work, see #107848 and #107847.