ci: add a basic smoke check to the python package verification

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: vdusek

.github/workflows/manual_release_beta.yaml

@@ -67,6 +67,8 @@ jobs:
           src_package_dir: src/apify_shared
           dist_dir: dist
           python_version: "3.14"
+          smoke_code: |
+            from apify_shared.consts import WebhookEventType
 
       # Publish the package to PyPI using PyPA official GitHub action with OIDC authentication.
       - name: Publish package to PyPI

.github/workflows/manual_release_stable.yaml

@@ -102,6 +102,8 @@ jobs:
           src_package_dir: src/apify_shared
           dist_dir: dist
           python_version: "3.14"
+          smoke_code: |
+            from apify_shared.consts import WebhookEventType
 
       # Publishes the package to PyPI using PyPA official GitHub action with OIDC authentication.
       - name: Publish package to PyPI

.github/workflows/on_pull_request.yaml

@@ -25,6 +25,8 @@ jobs:
       src_package_dir: src/apify_shared
       dist_dir: dist
       python_version: "3.14"
+      smoke_code: |
+        from apify_shared.consts import WebhookEventType
 
   tests:
     name: Tests