Prevent multiple blobs/ rollups in the same tx

[badgersrus]

Why this change is needed

https://github.com/ten-protocol/ten-internal/issues/4483

What changes were made as part of this PR

• If multiple rollups are found in the same block, check they have unique tx hashes before storing the block/ rollup
• change the logger warning to trace as it will only reach that point if we have multiple rollups with unique txs in the block (ie in mem test)

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[BedrockSquirrel]

lgtm