Expand core plain-type guard coverage for new helpers

Co-authored-by: Shri Sukhani <shrisukhani@users.noreply.github.com>

Author: cursoragent

tests/test_core_type_helper_usage.py

@@ -26,7 +26,12 @@
     "hyperbrowser/client/managers/sync_manager/session.py",
     "hyperbrowser/client/managers/async_manager/session.py",
     "hyperbrowser/client/managers/computer_action_utils.py",
+    "hyperbrowser/client/managers/extension_create_utils.py",
+    "hyperbrowser/client/managers/job_pagination_utils.py",
+    "hyperbrowser/client/managers/page_params_utils.py",
     "hyperbrowser/client/managers/session_upload_utils.py",
+    "hyperbrowser/client/managers/session_profile_update_utils.py",
+    "hyperbrowser/client/managers/web_pagination_utils.py",
     "hyperbrowser/client/managers/web_payload_utils.py",
     "hyperbrowser/tools/__init__.py",
     "hyperbrowser/display_utils.py",