* Refactor to use AudioContext
* Remove unused audio format.
* Reduce update frequency for volume
* Port to useAudioContext
* Port reactionaudiorenderer to useAudioContext
* Integrate raise hand sound into call event renderer.
* Simplify reaction sounds
* only play one sound per reaction type
* Start to build out tests
* fixup tests / comments
* Fix reaction sound
* remove console line
* Remove another debug line.
* fix lint
* Use testing library click
* lint
* Add support for playing a sound when the user exits a call.
* Port GroupCallView to useAudioContext
* Remove debug bits.
* asyncify
* lint
* lint
* lint
* tidy
* Add test for group call view
* Test widget mode too.
* fix ?.
* Format
* Lint
* Lint
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Co-authored-by: Hugh Nimmo-Smith <hughns@element.io>