Update test script to run without flakiness

Changed test script execution from 'flaky' to 'pass'.

Author: DariuszPorowski

.github/workflows/merge-queue-demo.yaml

@@ -46,7 +46,7 @@ jobs:
       - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
       - name: Run Flaky Test
         # Change 'pass' to 'flaky' to simulate flakiness
-        run: ./scripts/test.sh flaky
+        run: ./scripts/test.sh pass
 
   # Scenario: Semantic Conflict Simulation
   # This job checks a version file. If two PRs change it incompatibly, this fails.