Update integration-tests.yml to trigger workflows on pull requests to the main branch

- Added pull_request event configuration to the integration-tests.yml file, specifying paths for integration tests, state manager, and Python SDK to ensure proper testing on PRs.

Author: NiveditJain

.github/workflows/integration-tests.yml

@@ -8,6 +8,14 @@ on:
           - 'state-manager/**'
           - 'python-sdk/**'
           - '.github/workflows/integration-tests.yml'
+    pull_request:
+        branches: [main]
+        paths:
+          - 'integration-tests/**' 
+          - 'state-manager/**'
+          - 'python-sdk/**'
+          - '.github/workflows/integration-tests.yml'
+
 
 jobs:
     test: