`TestRoomDeleteAlias` tests optional behaviour but fails if it is not performed

https://github.com/matrix-org/complement/blob/1a2baac5dbf45ead46409793fe625b3c253eb4f6/tests/csapi/apidoc_room_alias_test.go#L277-L308

The test Can delete canonical alias requires that servers update the m.room.canonical_alias event when an associated alias is deleted via DELETE /_matrix/client/v3/directory/room/{roomAlias}, but this behaviour is optional, and not even a SHOULD in the spec:

Note: Servers may choose to update the alt_aliases for the m.room.canonical_alias state event in the room when an alias is removed. Servers which choose to update the canonical alias event are recommended to, in addition to their other relevant permission checks, delete the alias and return a successful response even if the user does not have permission to update the m.room.canonical_alias event.

This means the test will fail on any server that does not choose to implement this behaviour. The test should simply pass or at least be skipped if the canonical alias event update does not come down sync.

Inizia in tests/csapi/apidoc_room_alias_test.go, nel test Can delete canonical alias, righe 277-308. Esamina il modo in cui il test osserva l’evento m.room.canonical_alias tramite sync dopo l’eliminazione di un alias. Il lavoro è completato quando il test passa o viene ignorato se l’aggiornamento dell’evento opzionale è assente, continuando comunque a verificare l’aggiornamento quando viene fornito.