[NFC][sanitizer] Limit StackStore stack size/tag to 1 byte

Nothing uses more than 8bit now. So the rest of the headers can store other data.
kStackTraceMax is 256 now, but all sanitizers by default store just 20-30 frames here.

GitOrigin-RevId: 6889592ebcdea168f9e7a5dc91b8549527e4dbf7
2 files changed