sui_v1.79.0_1787360782_ci: [chore] Update tidehunter to f8bc93c + 4GB decompress cache (#27800)

Bump tidehunter to f8bc93cf6a973d31fbbe6fa7c2b643ddd8e83ddf . Enable the new compressed-batch decompress cache (4 GB) whenever the LZ4 batch codec is on, so consensus tidehunter picks it up alongside compression.