0x24856bc3?0x24856bc3 is the function selector for execute(bytes,bytes[]). Uniswap Universal Router command batch.
When a transaction's data begins with 0x24856bc3, it is calling execute. The selector is the first four bytes of the keccak-256 hash of the signature execute(bytes,bytes[]), which is how wallets and explorers work out which function a payload is for.