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

charts/coprocessor/Chart.yaml

@@ -1,6 +1,6 @@
 name: coprocessor
 description: A helm chart to distribute and deploy Zama fhevm Co-Processor services
-version: 0.8.4
+version: 0.8.5
 apiVersion: v2
 keywords:
   - fhevm