45085b2b0e
This bug was introduced in #126561. The issue was that the UI action selectors no longer ensured that animdata existed before attempting to assign an action, which would then cause the assignment to fail. However, this was only the case in Blender builds without experimental features, since the new Baklava code paths would otherwise be taken, which *do* handle this correctly. This fixes the issue by ensuring animdata in the non-experimental code paths again. Pull Request: https://projects.blender.org/blender/blender/pulls/128083