fix(coprocessor): use block hash to identify transaction

fixes a bug where 2 transactions are swapped during a reorg butkeeping the sametx id and being dependent on each other
the 4 tx are merged and create a cycle

Author: rudy-6-4

.github/workflows/test-suite-e2e-tests.yml

@@ -254,6 +254,8 @@ jobs:
         working-directory: test-suite/fhevm
         if: always()
         run: |
+          echo "::group::db-migration Logs"
+          ./fhevm-cli logs coprocessor-db-migration
           echo "::group::Relayer Logs"
           ./fhevm-cli logs fhevm-relayer
           echo "::endgroup::"