fix: audio segment on incorrect timeline HLS

[wseymour15]

Description

Related to #1530

This fixes an issue that was previously thought to just happen in DASH above. Now, in HLS, if the audio segment in on a previous timeline to the video segment, we will push playback to where they are both on the same timeline.

Specific Changes proposed

• Removes the DASH safeguards in the audio segment behind timeline logic so this covers HLS as well.

Requirements Checklist

• Feature implemented / Bug fixed
• If necessary, more likely in a feature request than a bug fix
  • Unit Tests updated or fixed
  • Docs/guides updated
  • Example created (starter template on JSBin)
• Reviewed by Two Core Contributors

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.36%. Comparing base (96a3dc5) to head (ba2b74b).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1539      +/-   ##
==========================================
- Coverage   86.36%   86.36%   -0.01%     
==========================================
  Files          43       43              
  Lines       11149    11148       -1     
  Branches     2546     2545       -1     
==========================================
- Hits         9629     9628       -1     
  Misses       1520     1520              

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