Add UI pattern for easily rejecting an in-progress recording

[phoebejaffe]

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It'd be great if we could abandon a recording easily, without needing to release, then manually delete the recording. Every time I trip over my words in a short recording, I do it again, then have to delete the original one. It'd be great if I could abort and try again really easily.

[maxkrieger]

Yeah maybe a little X appears in the bottom left, or your PR

[phoebejaffe]

This in addition to what’s pictured in the PR? Or does the ui in the PR feel okay? (Confession, I leaned away from images and icons so I wouldn’t have to figure them out, ha!)

[maxkrieger]

Rolling this out, thanks so much!