Prover: fix the txnrlp duplicated txnrlp bug

[AlexandreBelling]

This PR implements a fix for an outstanding integration issue between the prover and txnrlp. The issue is that the prover infers a transaction signature via a mapping between tx-hash and tx-signature but it is possible that two transactions have the same transaction hash (as in the hash for signing). In that case, the current approach will not work. This PR addresses the issue by mapping the signature by tx-id.

The tx-hash is still used to sanity-check that the signature that is infered relates to the expected transaction. Thus, helping in the debugging process if any bugs stands out here.

[github-actions]

Delta Summary - Kotlin Code Coverage

Generated on:	09/23/2024 - 16:02
Description	Previous	Current	Delta
Coverage date:	09/23/2024 - 16:02	09/23/2024 - 16:02
Tag:	362_10997807257	362_10997807257
Line coverage:	27.3%	27.3%	0.0%
Covered lines:	25578	25578	0
Coverable lines:	93680	93680	0
Total lines:	132748	132748	0
Branch coverage:	10.3%	10.3%	0.0%
Covered branches:	5494	5494	0
Total branches:	52848	52848	0
Method coverage:	Feature is only available for sponsors