Fix for ready.py (#11346)

* Fix for ready.py

- Early exit for isGeneratingSchema when removing stale content types
- Prevents blocking on update process

* Rearrange

src/backend/InvenTree/InvenTree/ready.py

@@ -6,6 +6,8 @@ import os
 import sys
 import warnings
 
+from django.conf import settings
+
 import structlog
 
 logger = structlog.get_logger('inventree')
@@ -59,7 +61,13 @@ def isRunningMigrations():
 def isRebuildingData():
     """Return true if any of the rebuilding commands are being executed."""
     return any(
-        x in sys.argv for x in ['rebuild_models', 'rebuild_thumbnails', 'rebuild']
+        x in sys.argv
+        for x in [
+            'rebuild',
+            'rebuild_models',
+            'rebuild_thumbnails',
+            'remove_stale_contenttypes',
+        ]
     )
 
 
@@ -104,9 +112,12 @@ def isGeneratingSchema():
     if not result:
         # We should only get here if we *are* generating schema
         # Any other time this is called, it should be from a server thread, worker thread, or test mode
-        logger.warning(
-            'isGeneratingSchema called outside of expected contexts - this may be a sign of a problem with the ready() function'
-        )
+
+        if settings.DEBUG:
+            logger.warning(
+                'isGeneratingSchema called outside of expected contexts - this may be a sign of a problem with the ready() function'
+            )
+            logger.warning('sys.argv: %s', sys.argv)
 
     return result