feat(time-ranges): make iteratable if Symbol.iterator exists

[gkatsev]

This allows us to call Array.from() on TimeRange objects created by Video.js. For example:

var input = [[0, 10], [20, 30]];
var timeRangeObj = videojs.createTimeRanges(input);
var output = Array.from(timeRangeObj);
assert.deepEqual(input, output, "they're the same!");

[codecov]

Codecov Report

Merging #7330 (f291a11) into main (bba6e17) will increase coverage by 0.09%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #7330      +/-   ##
==========================================
+ Coverage   79.53%   79.62%   +0.09%     
==========================================
  Files         115      115              
  Lines        7270     7263       -7     
  Branches     1747     1746       -1     
==========================================
+ Hits         5782     5783       +1     
+ Misses       1488     1480       -8     

Impacted Files	Coverage Δ
src/js/utils/time-ranges.js	76.00% <100.00%> (+3.27%)	⬆️
src/js/player.js	87.13% <0.00%> (+0.11%)	⬆️
src/js/utils/url.js	78.04% <0.00%> (+8.66%)	⬆️

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[brandonocasey]

seems good to me, could use a test though.