fix: Replace Object.values with ponyfill

[dzianis-dashkevich]

Description

Context: #8266

Specific Changes proposed

• Add videojs.obj.values util.
• Replace Object.values usage.

Note

• Currently, BrowserStack Chrome 53 setup is failing. We should set up a proper Chrome 53 separate test environment.
• Firefox 64 version was unpinned in this PR.

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 #8267 (d189a6c) into main (1491d71) will increase coverage by 82.36%.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##           main    #8267       +/-   ##
=========================================
+ Coverage      0   82.36%   +82.36%     
=========================================
  Files         0      112      +112     
  Lines         0     7483     +7483     
  Branches      0     1804     +1804     
=========================================
+ Hits          0     6163     +6163     
- Misses        0     1320     +1320     

Impacted Files	Coverage Δ
src/js/title-bar.js	100.00% <ø> (ø)
src/js/utils/obj.js	75.86% <100.00%> (ø)

... and 110 files with indirect coverage changes

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[jonybekov]

Is it going to be released as v7 patch or v8?

[dzianis-dashkevich]

Is it going to be released as v7 patch or v8?

@jonybekov, I think only v8 since I don't see any Object.values usage in v7