Use getSettings instead of getCapabilities to fix FF error

[timmydoza]

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Pull Request Details

JIRA link(s):

• N/A

Description

This PR fixes an issue where users are unable to acquire audio in Firefox due to an error.

This PR removes the usage of mediaStreamStrack.getCapabilities() and replaces it with mediaStreamStrack.getSettings(). These functions are used to get the deviceID after a camera track is acquired.

The error was due to the fact that getCapabilities() is not supported in Firefox. See the following browser compatibility tables:
https://developer.mozilla.org/en-US/docs/Web/API/MediaStreamTrack/getSettings
https://developer.mozilla.org/en-US/docs/Web/API/MediaStreamTrack/getCapabilities

This PR works in desktop and mobile versions of Chrome, Firefox, and Safari.

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