Fix AbortError when playing tweet videos under Strict Mode

[ShobhanKarthish]

Summary

Playing a tweet video in React Strict Mode (dev) can log:

AbortError: The play() request was interrupted because the media was removed from the document.

The play button handler was grabbing the video via previousSibling, then calling setPlayButton(false). That unmounts the button and can leave play() racing a remount, which surfaces as an AbortError even though playback often still works on retry.

This change:

• Adds a videoRef on the <video> element and uses that instead of previousSibling
• Ignores AbortError in the .catch so expected interruptions from remounts don’t spam the console

Test plan

• Embed a video tweet (e.g. id 2006254902629044564) with React Strict Mode on
• Click play and confirm the video starts without an AbortError in the console
• Confirm controls / focus still work after play
• Confirm real play failures still log and restore the play button

Closes #213

[vercel]

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