Stop screensharing on disconnect

[timmydoza]

Contributing to Twilio

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Pull Request Details

JIRA link(s):

• VIDEO-4365

Description

This PR stops all tracks (audio, video, and screen share) when the user is disconnected from the room for any reason (network disconnection, or clicking the 'Disconnect' button). Previously, the tracks were only stopped when the user clicked on the Disconnect button.

Resolves #444

Burndown

Before review

• Updated CHANGELOG.md if necessary
• Added unit tests if necessary
• Updated affected documentation
• Verified locally with npm test
• Manually sanity tested running locally
• Included screenshot as PR comment (if needed)
• Ready for review

Before merge

• Got one or more +1s
• Re-tested if necessary