When I moved ParsableByteArray#data behind a getter I replaced some
assignments with calls to reset(byte[]):
ce2e6e2fd6
reset(byte[]) deliberately sets `limit` to `data.length`, in order to
handle cases that were reassigning `data` but not updating `limit`.
However OggPacket was already using `limit` to track where to write
'new' data into the array, so changing `limit` to `data.length` caused
us to try and write new data beyond the end of the array.
I looked at other uses of reset(byte[]) in ce2e6e2fd6
and condluded the only other usage in MatroskaExtractor is legit and
shouldn't be updated like this (because MatroskaExtractor previously
*wasn't* correctly updating/maintaining `limit`).
Issue: #7992
PiperOrigin-RevId: 334601586
ae0d9b1359