fix: changeType on full codec change only

[adrums86]

Description

Call changeType only when the codec base has changed.

Specific Changes proposed

Parse the codec base from the new codec and the existing codec for the given track and compare that to determine if we need to call changeType on the source buffer.

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 ✅

Comparison is base (ceb780a) 86.06% compared to head (af2d2e4) 86.06%.
Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1474   +/-   ##
=======================================
  Coverage   86.06%   86.06%           
=======================================
  Files          42       42           
  Lines       10749    10752    +3     
  Branches     2474     2474           
=======================================
+ Hits         9251     9254    +3     
  Misses       1498     1498           

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[misteroneill]

Seems reasonable to me!