Add test workflow.

.github/workflows/application-signals-e2e-test.yml

@@ -7,7 +7,7 @@
 name: Application Signals E2E Test
 on:
   workflow_run:
-    workflows: [ Build Test Artifacts ]
+    workflows: [ Test Workflow Run, Build Test Artifacts ]
     types:
       - completed
 

.github/workflows/integration-test.yml

@@ -21,7 +21,7 @@ env:
 
 on:
   workflow_run:
-    workflows: [ Build Test Artifacts ]
+    workflows: [ Test Workflow Run, Build Test Artifacts ]
     types:
       - completed
 

.github/workflows/test-workflow-run.yml

@@ -0,0 +1,12 @@
+# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+# SPDX-License-Identifier: MIT
+
+name: Test Workflow Run
+on:
+  workflow_dispatch:
+
+jobs:
+  fail-the-step:
+    runs-on: ubuntu-latest
+    steps:
+      - run: echo 'Fail this' && exit 1