h26{4,5}parse: Don't confuse nal of codec_data with frame

vps/sps/pps in codec_data shouldn't be considered as inband data.
Otherwise, h26{4,5}parse never insert them to nal when transform
(packetized to byte-stream) use case
6 jobs for fix-h264-regression in 29 minutes and 50 seconds (queued for 4 minutes and 19 seconds)
Status Name Job ID Coverage
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passed gst indent #62298

00:00:27

passed manifest #62296

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  Build
passed build fedora x86_64 #62301

00:03:33

 
  Test
passed check fedora #62303

00:15:50

 
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passed build android arm64 api28 #62305

00:03:20

passed build cerbero fedora x86_64 #62306

00:09:35