qa-tests: keep pre-built db synced in RPC Integration Test Latest (#19308)

Currently, when the test runner has to execute a large number of tests,
the pre-built database remains well below the tip of the chain,
resulting in failed tests.
This PR adds a step to delay test execution if the Erigon instance
dedicated to the db maintenance is not on the chain tip.

Author: mriccobene

.github/workflows/qa-rpc-integration-tests-latest.yml

@@ -55,6 +55,18 @@ jobs:
           make erigon integration
         working-directory: ${{ github.workspace }}
 
+      - name: Wait for current Erigon instance to reach the tip
+        run: |
+          ERIGON_PID=$(pgrep -x erigon | head -1)
+          if [ -z "$ERIGON_PID" ]; then
+            echo "Could not find running Erigon process dedicated to db maintenance"
+          else
+            echo "Found Erigon process dedicated to db maintenance, PID: $ERIGON_PID"
+            python3 $ERIGON_QA_PATH/test_system/qa-tests/tip-sync/run_and_chase_tip.py \
+              --total-time=$TOTAL_TIME_SECONDS \
+              --stop-erigon=False \
+              --erigon-pid=$ERIGON_PID
+          fi
       - name: Pause the Erigon instance dedicated to db maintenance
         run: |
           python3 $ERIGON_QA_PATH/test_system/db-producer/pause_production.py || true
@@ -78,7 +90,7 @@ jobs:
           echo "Running migrations on datadir..."
           ./integration run_migrations --datadir $ERIGON_TESTBED_DATA_DIR --chain $CHAIN
 
-      - name: Run Erigon version and wait for sync
+      - name: Run Erigon and wait for sync
         id: pre_test_step
         run: |
           set +e # Disable exit on error