fix: use cached import helper for Logging in ahealth_check to preserve lazy loading

- Use get_litellm_logging_class() from cached_imports instead of direct import
- Preserves lazy loading benefit (only loads when function is called)
- Follows existing codebase pattern for cached imports
- Fixes NameError: name 'Logging' is not defined in test_ahealth_check_ocr

litellm/main.py

@@ -6109,6 +6109,10 @@ async def ahealth_check(
         }
     """
     from litellm.litellm_core_utils.health_check_helpers import HealthCheckHelpers
+    from litellm.litellm_core_utils.cached_imports import get_litellm_logging_class
+    
+    # Use cached import helper to lazy-load Logging class (only loads when function is called)
+    Logging = get_litellm_logging_class()
 
     # Map modes to their corresponding health check calls
     #########################################################