Test failures when v12 rooms are the default

Nessuno ha ancora preso questa issue.

## Failing tests on v12

### `tests/csapi`

Most of these tests directly do something with PLs causing them to break. Some weird quirks with sync though need investigation.

```
--- FAIL: TestRoomDeleteAlias (8.40s)
--- FAIL: TestRoomDeleteAlias/Parallel (0.00s)
--- FAIL: TestRoomDeleteAlias/Parallel/Users_with_sufficient_power-level_can_delete_other's_aliases (0.70s)
--- FAIL: TestRoomDeleteAlias/Parallel/Regular_users_can_add_and_delete_aliases_when_m.room.aliases_is_restricted (0.88s)

--- FAIL: TestRoomMembers (8.35s)
--- FAIL: TestRoomMembers/Parallel (0.00s)
--- FAIL: TestRoomMembers/Parallel/Test_that_we_can_be_reinvited_to_a_room_we_created (0.52s)

--- FAIL: TestDemotingUsersViaUsersDefault (7.36s)

--- FAIL: TestPowerLevels (7.51s)
--- FAIL: TestPowerLevels/GET_/rooms/:room_id/state/m.room.power_levels_can_fetch_levels (0.01s)
--- FAIL: TestPowerLevels/PUT_/rooms/:room_id/state/m.room.power_levels_can_set_levels (0.02s)
--- FAIL: TestPowerLevels/PUT_power_levels_should_not_explode_if_the_old_power_levels_were_empty (0.01s)

--- FAIL: TestRoomCreationReportsEventsToMyself (12.77s)
--- FAIL: TestRoomCreationReportsEventsToMyself/parallel (0.00s)
--- FAIL: TestRoomCreationReportsEventsToMyself/parallel/Room_creation_reports_m.room.create_to_myself (0.12s)

--- FAIL: TestSync (20.19s)
--- FAIL: TestSync/parallel (2.87s)
--- FAIL: TestSync/parallel/sync_should_succeed_even_if_the_sync_token_points_to_a_redaction_of_an_unknown_event (10.18s)

--- FAIL: TestSyncTimelineGap (18.62s)
--- FAIL: TestSyncTimelineGap/incremental (5.12s)
--- FAIL: TestSyncTimelineGap/full (5.16s)
```

### `tests`

Basically any test that uses the complement federation server is likely to be affected by this.

```
--- FAIL: TestIsDirectFlagFederation (7.66s)
--- FAIL: TestEventAuth (7.88s)
--- FAIL: TestFederationRedactSendsWithoutEvent (10.49s)
--- FAIL: TestInboundFederationRejectsEventsWithRejectedAuthEvents (13.96s)
--- FAIL: TestGetMissingEventsGapFilling (13.77s)
--- FAIL: TestOutboundFederationIgnoresMissingEventWithBadJSONForRoomVersion6 (8.16s)
--- FAIL: TestOutboundFederationEventSizeGetMissingEvents (8.14s)
--- FAIL: TestJoinViaRoomIDAndServerName (8.97s)
--- FAIL: TestJoinFederatedRoomWithUnverifiableEvents (7.96s)
--- FAIL: TestJoinFederatedRoomWithUnverifiableEvents//send_join_response_missing_signatures_shouldn't_block_room_join (0.00s)
--- FAIL: TestJoinFederatedRoomWithUnverifiableEvents//send_join_response_with_bad_signatures_shouldn't_block_room_join (0.00s)
--- FAIL: TestJoinFederatedRoomWithUnverifiableEvents//send_join_response_with_unobtainable_keys_shouldn't_block_room_join (0.00s)
--- FAIL: TestJoinFederatedRoomWithUnverifiableEvents//send_join_response_with_state_with_unverifiable_auth_events_shouldn't_block_room_join (0.00s)
--- FAIL: TestOutboundFederationSend (7.61s)
--- FAIL: TestNetworkPartitionOrdering (7.85s)
--- FAIL: TestSyncOmitsStateChangeOnFilteredEvents (8.16s)
--- FAIL: TestUnrejectRejectedEvents (7.92s)
```

Inizia eseguendo i test falliti elencati in tests/csapi e tests, concentrandoti sui casi che riguardano i livelli di potere, la sincronizzazione, la creazione delle stanze e la federazione. Confronta i fallimenti usando le stanze v12 come impostazione predefinita e traccia le interazioni con il server di federazione Complement. Il lavoro è completato quando i fallimenti elencati passano con v12 come versione predefinita delle stanze.

Scritto dal modello di indicizzazione a partire dal testo della issue.