fix: Exit PIP if entering fullscreen

[jacobhamblin]

Description

Updates video.js to exit PiP when requesting fullscreen per this issue.

Specific Changes proposed

• A check at the top of requestFullscreen for isInPictureInPicture, calling exitPictureInPicture if so.

Should more be done here?

Requirements Checklist

• Feature implemented / Bug fixed
• If necessary, more likely in a feature request than a bug fix
  • Change has been verified in an actual browser (Chrome, Firefox, IE)
  • Unit Tests updated or fixed
  • Docs/guides updated
  • Example created (starter template on JSBin)
• Reviewed by Two Core Contributors

[welcome]

💖 Thanks for opening this pull request! 💖

Things that will help get your PR across the finish line:

• Run npm run lint -- --errors locally to catch formatting errors earlier.
• Include tests when adding/changing behavior.
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[codecov]

Codecov Report

Merging #8082 (1342c59) into main (df71bb0) will increase coverage by 0.06%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #8082      +/-   ##
==========================================
+ Coverage   81.91%   81.97%   +0.06%     
==========================================
  Files         110      110              
  Lines        7342     7341       -1     
  Branches     1772     1771       -1     
==========================================
+ Hits         6014     6018       +4     
+ Misses       1328     1323       -5     

Impacted Files	Coverage Δ
src/js/player.js	89.77% <100.00%> (+0.01%)	⬆️
src/js/poster-image.js	75.60% <0.00%> (ø)
src/js/tech/html5.js	67.18% <0.00%> (+0.87%)	⬆️

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[mister-ben]

Looks good, although a test would be nice.

[welcome]

Congrats on merging your first pull request! 🎉🎉🎉