Events returned by the `/sync` endpoint, including relations bundled with other events, may have their `room_id`s stripped out. This causes decryption errors if the IDs aren't repopulated.
Fixesvector-im/element-web#22094.
* Fix test message utils using overload
* Tweak existing tests
* Add test around `MatrixClient::getEventTimeline`
* Fix test to actually exercise the faulty behaviour
* Extract timelineSet thread belongs logic and test it
* tweak method name
* Update relations after every decryption attempt
If an event is encrypted the aggregation cannot pick up the relation types.
Before this change there was exactly one aggregation retry after decryption.
If the events are being decrypted afterwards (for example on restore
from key backup) the aggregation was not aware of that.
This change adds relation updates after every decryption event if there
has been a decryption error.
Signed-off-by: Michael Weimann <michaelw@matrix.org>
