- `is_local`: now use `server_jid`.
- `aio_func`: pass the missing `self` argument (`aio_fund` is unbound).
- Declare `pubsub_service` in `core_types.SatXMPPEntity`
- plugin XEP-0277: fix handling of `MbData.from_element` when node is not specified (so we
use default node).
- plugin XEP-0346: `IdentityData`: fix field access, following move to Pydantic model.