docs: update explanation for batch-hash-mismatch bug (wrong for arb)

[samlaf]

The batch hash mistmatch bug explanation here is incomplete:

1. this error is only possible for op: arb's sequencer inbox is a contract which would prevent the commitment from even landing on-chain in the case of a reorg that would change the confirmation-block-number
2. even for the op case, I'm not 100% sure that the recent op-batcher wouldn't catch the reorg and resubmit a new blob. So might not be as important an issue as we've highlighted... need to confirm this with OP folks.

We should also add the example error at the top of the section:

t=2025-02-10T07:25:24+0000 lvl=info msg=request role=eigenda_proxy method=GET url=/get/0x010000f901d8f852f842a02da35fdbe4fed916eb80fafb6e12711a35327e1e7055b78fc9085812e9d6e28fa021c98859127f075fc90785a730ce1b3894586badee45a698a5cce9c2d6d36269820200cac480213701c401213708f901818302270581c3f873eba0eea9df513a56cbdc8a8c045ddaa61a2a7f86097ad0b99b5b08baa7119065effe82000182636283328734a0c7c898eb39076fbc6b367c51c1908a68bbcac3d81f739057aec168aa3a78e1b20083328792a0c3169896044de8cee3270fdd643157665353a6963149cb158b63137ac405251ab90100c3904bddb63b2be1f2e779b9ecf289fe40693eb943cb260a7d5c95ac6021f35883ade0e4d82e071b86158510fc83cd2c2d61f4a72e6bc6d5c533bacd44eb6a6b97f742d7518f6475f65fb0656fe58d8ad2cc8961c770680c9538593c5a8bc3861fc11e38477076f06911e6de93d9b641b535115700bcdcc863b58b021a7a177b3343e80ab645867061216e191740e4558754e7d13fc3f235743f8d865c0f976a91a3c7912d03e56bb955ddec854c2d661edfc43d5c366040296eac657960a8b40ec6e01b17624d18f32e930b8712cc1a00a2f696229ce10b5b03b3c7c992b601c8ef46390b2fd016687cd1ed4cd70310018dfa97418c7819a0cda7322a7eefa4820001 status=500 duration=585.735929ms err="Error: get request failed with commitment f901d8f852f842a02da35fdbe4fed916eb80fafb6e12711a35327e1e7055b78fc9085812e9d6e28fa021c98859127f075fc90785a730ce1b3894586badee45a698a5cce9c2d6d36269820200cac480213701c401213708f901818302270581c3f873eba0eea9df513a56cbdc8a8c045ddaa61a2a7f86097ad0b99b5b08baa7119065effe82000182636283328734a0c7c898eb39076fbc6b367c51c1908a68bbcac3d81f739057aec168aa3a78e1b20083328792a0c3169896044de8cee3270fdd643157665353a6963149cb158b63137ac405251ab90100c3904bddb63b2be1f2e779b9ecf289fe40693eb943cb260a7d5c95ac6021f35883ade0e4d82e071b86158510fc83cd2c2d61f4a72e6bc6d5c533bacd44eb6a6b97f742d7518f6475f65fb0656fe58d8ad2cc8961c770680c9538593c5a8bc3861fc11e38477076f06911e6de93d9b641b535115700bcdcc863b58b021a7a177b3343e80ab645867061216e191740e4558754e7d13fc3f235743f8d865c0f976a91a3c7912d03e56bb955ddec854c2d661edfc43d5c366040296eac657960a8b40ec6e01b17624d18f32e930b8712cc1a00a2f696229ce10b5b03b3c7c992b601c8ef46390b2fd016687cd1ed4cd70310018dfa97418c7819a0cda7322a7eefa4820001: failed to verify batch: batch hash mismatch, onchain: 3f5b8c23001297ae107370b73956650a20d6cdb2097bddde70de590ef35ef5a9, computed: e7c00bb840cbfaa80b9f505d8df5e5fdbdfe87852908de0628d811b415616702 (Mode: optimism_generic, CertVersion: 0)" commitment_mode=optimism_generic cert_version=0

[samlaf]

@ethenotethan assigning to you for now. Can you add an explanation for how arbitrum behaves and why this is not an issue? Then reassign to me and I'll reupdate the op part.

[samlaf]

For op question, just asked on their discord: https://discord.com/channels/1244729134312198194/1316114968613093507/1345085550344015964