qa-tests: upload preparing step logs to rpc integration latest (#19488)

Author: mriccobene

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

@@ -56,6 +56,7 @@ jobs:
         working-directory: ${{ github.workspace }}
 
       - name: Wait for current Erigon instance to reach the tip
+        id: preparing_step
         run: |
           ERIGON_PID=$(pgrep -x erigon | head -1)
           if [ -z "$ERIGON_PID" ]; then
@@ -68,6 +69,13 @@ jobs:
               --erigon-pid=$ERIGON_PID
           fi
 
+      - name: Upload preparing-step logs on failure
+        if: failure() && steps.preparing_step.outcome == 'failure'
+        uses: actions/upload-artifact@v6
+        with:
+          name: preparing-step-logs
+          path: ${{ env.ERIGON_REFERENCE_DATA_DIR }}/logs/
+
       - name: Pause the Erigon instance dedicated to db maintenance
         run: |
           python3 $ERIGON_QA_PATH/test_system/db-producer/pause_production.py || true