[pseudoIDs] Allow displayname changes, kick users on redaction

[S7evinK]

This PR changes a few things to allow displayname/avatar changes in pseudo ID rooms.

• GetRoomsByMembership now queries the pseudo ID keys to get all rooms
• When redacting a join event containing a mxid_mapping in content, the user leaves the room or is kicked
• When redacting an event, we now also redact it in current_room_state (if needed)
• When storing a membership event (e.g. join -> join) we now remove the mxid_mapping from unsigned.prev_content)
• When receiving a membership event over federation, we check if it is a join -> join event and temporarily add a prev_content, so validating the event signature doesn't error because of a missing mxid_mapping

A few things we need to think about:
Considering that users can leave rooms on their own and rejoin them, we now have two join events with a mxid_mapping. Currently redacting the current join event results in a leave/kick, but we still have another unredacted mxid_mapping. It's up to the client to walk the unsigned.replaces_state field to redact other membership events containing a mxid_mapping

Kicking users, on redaction of a join event, may not always be possible, as the powerlevels could have been changed to allow redactions for PL50, but kicking is only allowed for PL100. How do we handle those cases? Temporarily fake/update the powerlevels to allow kicking?

[codecov]

Codecov Report

Attention: Patch coverage is 42.50000% with 138 lines in your changes missing coverage. Please review.

Project coverage is 64.31%. Comparing base (c809e95) to head (cae2b61).
Report is 120 commits behind head on main.

Files	Patch %	Lines
roomserver/internal/input/input_events.go	7.14%	65 Missing ⚠️
roomserver/storage/shared/storage.go	62.50%	13 Missing and 5 partials ⚠️
roomserver/internal/query/query.go	0.00%	9 Missing ⚠️
syncapi/storage/shared/storage_consumer.go	70.96%	6 Missing and 3 partials ⚠️
...oomserver/storage/postgres/user_room_keys_table.go	68.42%	4 Missing and 2 partials ⚠️
roomserver/storage/sqlite3/membership_table.go	70.00%	3 Missing and 3 partials ⚠️
roomserver/storage/sqlite3/user_room_keys_table.go	68.42%	4 Missing and 2 partials ⚠️
syncapi/consumers/roomserver.go	37.50%	4 Missing and 1 partial ⚠️
roomserver/internal/perform/perform_backfill.go	0.00%	4 Missing ⚠️
federationapi/internal/perform.go	0.00%	3 Missing ⚠️
... and 3 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3131      +/-   ##
==========================================
- Coverage   64.44%   64.31%   -0.14%     
==========================================
  Files         506      506              
  Lines       57011    57202     +191     
==========================================
+ Hits        36743    36788      +45     
- Misses      16442    16576     +134     
- Partials     3826     3838      +12     

Flag	Coverage Δ
unittests	49.07% <42.50%> (-0.08%)	⬇️

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[S7evinK]

Not needed anymore, iirc.