* Update for compatibility with v12 rooms
Stop using powerLevelNorm and reading PL events manually.
To support https://github.com/matrix-org/matrix-js-sdk/pull/4937
* Add test for leave space dialog
* Don't compute stuff if we don't need it
* Use room.client
* Use getSafeUserId
* Remove client arg
* Use getJoinedMembers
and add doc
* Fix tests
* Fix more tests
* Fix other test
* Clarify comment
Co-authored-by: Michael Telatynski <7t3chguy@gmail.com>
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Co-authored-by: Michael Telatynski <7t3chguy@gmail.com>
