Fix isInTestMode check

src/backend/InvenTree/InvenTree/api_version.py

@@ -20,7 +20,7 @@ v491 -> 2026-05-21 : https://github.com/inventree/InvenTree/pull/11979
     - Add API serializer for deleting a stock location
 
 v490 -> 2026-05-19 : https://github.com/inventree/InvenTree/pull/11963
-    - moves user-self-filtered endpoints to /user/me/ to make their security boundaries clearer
+    - Moves user-self-filtered endpoints to /user/me/ to make their security boundaries clearer
 
 v489 -> 2026-05-18 : https://github.com/inventree/InvenTree/pull/11962
     - Removes the "remote_image" field from the Part API endpoint

src/backend/InvenTree/InvenTree/ready.py

@@ -37,7 +37,9 @@ def isAppLoaded(app_name: str) -> bool:
 
 def isInTestMode():
     """Returns True if the database is in testing mode."""
-    return any(x in sys.argv for x in ['test', 'pytest'])
+    return any(x in sys.argv for x in ['test', 'pytest']) or sys.argv[0].endswith(
+        'pytest'
+    )
 
 
 def isWaitingForDatabase():