In `mesh_join_offset_face_sets_ID()`, `.sculpt_face_set` is modified but the `finish()` call wasn't present on the `SpanAttributeWriter`, leading to warnings and potentially broken data. This is now fixed.
In `mesh_join_offset_face_sets_ID()`, `.sculpt_face_set` is modified but the `finish()` call wasn't present on the `SpanAttributeWriter`, leading to warnings and potentially broken data. This is now fixed.