Federation event format returns a client event format

[jevolk]

Specification: 5.2 POST /_matrix/client/r0/user/{userId}/filter

event_format | enum
The format to use for events. 'client' will return the events in a format suitable for clients. 'federation' will return the raw event as receieved over federation. The default is 'client'. One of: ["client", "federation"]

Implementation: rest/client/v2_alpha/sync.py#L333

  def serialize(event):
            # TODO(mjark): Respect formatting requirements in the filter.
            return serialize_event(
                event, time_now, token_id=token_id,
                event_format=format_event_for_client_v2_without_room_id,
                only_event_fields=only_fields,
            )

[turt2live]

Presumably fixed by #3790