Before you're connected to the SFU the local participant object will have the empty string as its ID. This changes to your actual ID once you've connected. Apparently I tried to fix this by forcing the local ID to always be the string 'local' but then I just forgot to use it correctly :)
Previously, dragging it all the way to the left would *not* mute the participant but rather bottom out at 10% volume, and people have found this unintuitive. Let's make it less silly by giving the slider a range of 0% to 100%, and making the mute toggle button have the same effect as dragging the slider to zero. When unmuting, it will reset to the last non-zero "committed" volume, similar to how the volume sliders in desktop environments work.
* Handle case of encryption key for an index to be undefined
As per https://github.com/matrix-org/matrix-js-sdk/pull/4423 the key can be undefined and so we should handle this rather than waiting for SubtleCrypto.importKey() to fail.
* Use release version of matrix-js-sdk
Diff is baa6d13506...v34.7.0
* Use RTCSession. reemitEncryptionKeys()
* Add some test coverage whilst we are here
* Add some test coverage whilst we are here
* Lint
This adds tests for a couple of the less trivial bits of code in CallViewModel. Testing them helped me uncover why focus switches still weren't being smooth! (It was because I was using RxJS's sample operator when I really wanted withLatestFrom.)
Catching two accessibility issues along the way: we were putting the wrong accessible labels on the 'expand' button, and even the off-screen pages of the spotlight tile were being exposed to accessibility technologies rather than hidden.
* Enable lint rules for Promise handling to discourage misuse of them.
Squashed all of Hugh's commits into one.
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Co-authored-by: Hugh Nimmo-Smith <hughns@element.io>