fix: remove duplicate keystore genesis file check to prevent double initialization

apps/blockchain-node/src/aitbc_chain/consensus/poa.py

@@ -512,6 +512,12 @@ class PoAProposer:
         except Exception as e:
             self._logger.warning(f"RPC bootstrap failed: {e}, skipping account initialization")
         
+        # If both local file and RPC bootstrap failed, check if there's a keystore genesis file
+        keystore_allocations = self._load_genesis_allocations_from_file()
+        if keystore_allocations:
+            self._logger.info("Using keystore genesis allocations file")
+            self._create_accounts_from_allocations(session, keystore_allocations)
+    
     def _load_genesis_allocations_from_file(self) -> list:
         """Load genesis allocations from local file."""
         genesis_paths = [