When copying (CTRL+L->Animation Data) a driver between two objects
that are linked with library overrides, `AnimData` was not created.
This did crash Blender when it tried to use the `nullptr`
The reason it crashed is because the function
`DEG_id_tag_update()`
was never called.
Fix it by restructuring the code so the function gets called
Pull Request: https://projects.blender.org/blender/blender/pulls/110795
e42c70fd31