Allow join unmuted in widget mode

[toger5]

[hughns]

Actually, I've run out of time to do something today. What I noticed was that the URL parameters were not being parsed from the mocked router URL.

[toger5]

Thanks for the finding about the router URL. The tests work locally lets see what i have setup differently!

[toger5]

This already checks that the widget is started in widget mode. Hence the way it is now, it would not introduce the risk of allowing to share a unmuted link.

[hughns]

Following discussion: marking draft until we revisit this topic as part of expected flows for telephone/DM use cases.

[CLAassistant]

All committers have signed the CLA.

[toger5]

This should NOT be done using url parameters since this always allows to "mock" them. The better solution is to check if we are doing an embedded build. Closing this in favor of: https://github.com/element-hq/element-call/issues/3442