v12.3.0-rc.1

✨ Features

• Support for MSC3291: Muting in VoIP calls (#1812). Contributed by SimonBrandner.
• Support for screen-sharing using multi-stream VoIP (MSC3077) (#1685). Contributed by SimonBrandner.
• Handle DTMF support (#1813). Contributed by SimonBrandner.

🐛 Bug Fixes

• Fix error on turning off screensharing (#1833). Fixes element-hq/element-web#18449. Contributed by SimonBrandner.
• Fix blank profile in join events (#1837). Fixes element-hq/element-web#18321.
• fix TURN by fixing regression preventing multiple ICE candidates from sending. (#1838).
• Send user_hangup reason if the opponent supports it (#1820). Fixes element-hq/element-web#18219. Contributed by SimonBrandner.
• Apply hidden char check to rawDisplayName too (#1816).
• Only clear bit 63 when we create the IV (#1819).