The new `LIB_ID_MAKELOCAL_INDIRECT` option will force indirectly linked
data to also be made local. Note that this was already the case when a
whole library was made local.
Also some cleanup of options for 'make local', and pass
`IDWALK_IGNORE_MISSING_OWNER_ID` to the ID copying code for ID
management, since typically the owner pointer of embedded IDs at that
point is not yet set to its valid value.
There is no behavioral changes expected from this commit (even though
technically it does affect existing ID copying's behavior, there should
be no change in practice).
This is a requirement for incoming rewrite of the PartialWrite code
(see #122061 and !122118).
Pull Request: https://projects.blender.org/blender/blender/pulls/122118
8f8c825196