Remove HIDL media C2 from 202404 compatibility matrix

Put it in its own FCM so it's easier to manage while HIDL C2 is being
depregated with flagging.

This interface will not be allowed in the 202404 vendor interface.

Test: launch_cvd
Bug: 218588089
Change-Id: I24e14db4edd161a574a4404c8b7271c91dc1243a