fix: Generate chapters menu only when needed, and don't create orphaned event listeners

[mister-ben]

Description

The chapters button can create its menu multiple times if several tracks of any kind are present, and each menu item adds an event listener on the track which is not removed when it is replaced.

Specific Changes proposed

Reduces the instances the menu will be created.
Switches to a single event listener on the menu button to manage its menu's selected item.
Fixes #7595

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

[codecov]

Codecov Report

Merging #7604 (6b1e428) into main (eeda26f) will increase coverage by 0.06%.
The diff coverage is 92.30%.

@@            Coverage Diff             @@
##             main    #7604      +/-   ##
==========================================
+ Coverage   80.24%   80.31%   +0.06%     
==========================================
  Files         116      116              
  Lines        7325     7329       +4     
  Branches     1771     1772       +1     
==========================================
+ Hits         5878     5886       +8     
+ Misses       1447     1443       -4     

Impacted Files	Coverage Δ
...ar/text-track-controls/chapters-track-menu-item.js	80.00% <ø> (+18.09%)	⬆️
...control-bar/text-track-controls/chapters-button.js	89.06% <92.30%> (-1.68%)	⬇️
src/js/tracks/text-track.js	92.46% <0.00%> (+0.68%)	⬆️

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[misteroneill]

@mister-ben Any notes on a good way to test this manually?

[mister-ben]

Just add a chapters track, then another type of any kind, and observe console errors during playback.

7.18.1: https://jsbin.com/refevoseko/edit?html,css,output
This PR: https://jsbin.com/covowukade/edit?html,css,output