feat(blobs): Allow blobs (which are by definition > 128KB)

[ryanschneider]

📝 Summary

Currently we are blocking all tx over 128KB, which blocks blob txs.

⛱ Motivation and Context

Arbitrum might want to send blob txs to protect to skip the public mempool: https://flashbots.slack.com/archives/C0689NRL552/p1719345980974439

📚 References

Before:

> go run cmd/blob-sender/main.go -r https://rpc-holesky.flashbots.net --random-privkey --to 0x4bE0Cd2553356b4ABb8b6a1882325dAbC8d3013D -b "0xdeadbeef"

ERRO[0000] Error while sending transaction: invalid target for large tx  client="https://rpc-holesky.flashbots.net"

After:

> go run cmd/blob-sender/main.go -r https://rpc-holesky.flashbots.net --random-privkey --to 0x4bE0Cd2553356b4ABb8b6a1882325dAbC8d3013D -b "0xdeadbeef"
TX 1: 0x77c3481cbacdd3e463aa14e79153c2cf2f6bd66981fd99ab74b48298aca2d136

INFO [06-25|22:12:41.952] [sendRawTransaction] sending raw transaction uid=39a86cd3-12fa-4ae7-8096-ca266135ece6 rpc_method=eth_sendRawTransaction txHash=0x77c3481cbacdd3
INFO [06-25|22:12:41.957] [sendTxToRelay] sending transaction to relay uid=39a86cd3-12fa-4ae7-8096-ca266135ece6 rpc_method=eth_sendRawTransaction txHash=0x77c3481cbacdd3
INFO [06-25|22:12:42.015] [sendTxToRelay] sending transaction      uid=39a86cd3-12fa-4ae7-8096-ca266135ece6 rpc_method=eth_sendRawTransaction txHash=0x77c3481cbacdd3e463
INFO [06-25|22:12:43.498] [sendTxToRelay] Sent                     uid=39a86cd3-12fa-4ae7-8096-ca266135ece6 rpc_method=eth_sendRawTransaction txHash=0x77c3481cbacdd3e463
INFO [06-25|22:12:43.498] Request finished                         uid=39a86cd3-12fa-4ae7-8096-ca266135ece6 rpc_method=eth_sendRawTransaction duration=1.751

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✅ I have run these commands

• make lint
• make test
• go mod tidy

[ryanschneider]

Closing this as it makes more sense to send blobs directly via the relay API instead of through the RPC endpoint.