codec2 vts: Fix handling of codec config flag in decoders

Only codec config flag from the *.info file needs to be sent to
the codecs. Rest of the flags (like sync frame, non display frame)
etc are used in the tests and shouldn't be signalled to the codec.

Bug: 294262074
Test: atest VtsHalMediaC2V1_0TargetVideoDecTest \
 VtsHalMediaC2V1_0TargetAudioDecTest
(cherry picked from https://android-review.googlesource.com/q/commit:87cb9127233b71b7eafef7086905056756406cbd)
Merged-In: Ic54d20825f2883c4903e6d96ea9c82f738c5e6ea
Change-Id: Ic54d20825f2883c4903e6d96ea9c82f738c5e6ea