[Backport staging] Support for creator power level #4954
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* Support for creator power level Adds support for infinite power level specified by [MSC4289](matrix-org/matrix-spec-proposals#4289). * Update unit test * Hardcode versions as room versions strings aren't ordered * Add test for v12 rooms * Use more compact syntax Co-authored-by: R Midhun Suresh <[email protected]> * Fix doc Co-authored-by: R Midhun Suresh <[email protected]> * Fix additionalCreators from PR edit * Split out hydra room version check * Move power level logic into room state Which already has knowledge of the room create event * Add docs * Fix unused bits * Fix docs * Fix lying docstring * Reverse logic for hydra semantics Assume unknown room versions do use hydra * Use backticks Co-authored-by: Richard van der Hoff <[email protected]> * Switch back to hardcoding just the two hydra versions --------- Co-authored-by: R Midhun Suresh <[email protected]> Co-authored-by: Richard van der Hoff <[email protected]> (cherry picked from commit e119bf9)
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For js-sdk users, this includes the following:
- Send stable identifier `sender_device_keys` for MSC4147 (Including device keys with Olm-encrypted events).
([matrix-org#4964](matrix-org/matrix-rust-sdk#4964))
- Check the `sender_device_keys` field on _all_ incoming Olm-encrypted to-device messages and ignore any to-device messages which include the field but whose data is invalid (as per [MSC4147](matrix-org/matrix-spec-proposals#4147)).
([matrix-org#4922](matrix-org/matrix-rust-sdk#4922))
- Fix bug which caused room keys to be unnecessarily rotated on every send in the presence of blacklisted/withheld devices in the room.
([matrix-org#4954](matrix-org/matrix-rust-sdk#4954))
- Fix [matrix-rust-sdk#2729](matrix-org/matrix-rust-sdk#2729) which in rare cases can cause room key oversharing.
([matrix-org#4975](matrix-org/matrix-rust-sdk#4975))
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Backport e119bf9 from #4937.