mpegts: allow interacting with streams with unsupported codecs

[aler9]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 30.00000% with 7 lines in your changes missing coverage. Please review.

Project coverage is 81.48%. Comparing base (b1ff744) to head (2f5c038).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/formats/mpegts/codec_unsupported.go	0.00%	5 Missing ⚠️
pkg/formats/mpegts/track.go	60.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #147      +/-   ##
==========================================
- Coverage   81.59%   81.48%   -0.11%     
==========================================
  Files          75       76       +1     
  Lines        7052     7049       -3     
==========================================
- Hits         5754     5744      -10     
- Misses        941      948       +7     
  Partials      357      357              

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