fix(event_handlers): DB dead lock (#21468)

Signed-off-by: -LAN- <laipz8200@outlook.com>

api/events/event_handlers/__init__.py

@@ -3,8 +3,10 @@ from .clean_when_document_deleted import handle
 from .create_document_index import handle
 from .create_installed_app_when_app_created import handle
 from .create_site_record_when_app_created import handle
-from .deduct_quota_when_message_created import handle
 from .delete_tool_parameters_cache_when_sync_draft_workflow import handle
 from .update_app_dataset_join_when_app_model_config_updated import handle
 from .update_app_dataset_join_when_app_published_workflow_updated import handle
-from .update_provider_last_used_at_when_message_created import handle
+
+# Consolidated handler replaces both deduct_quota_when_message_created and
+# update_provider_last_used_at_when_message_created
+from .update_provider_when_message_created import handle