Merge branch 'patch/v1.5.x'

* patch/v1.5.x:
  Bugfix: Patch for light player exception with audio groups (#6342)
  Do not use "levelCodec" to instantiate SourceBuffer when multiple audio codec strings are present in the Multivariant Playlist variant CODECS attribute with muxed content (#6341)
  Bugfix: preferManagedMediaSource:false when MSE is not present  (#6338)
  Determine canSkip based on age of last playlist request (#6300)
  API.md update removeLevel