fix: ensure correct provider ID comparison in tool provider query (#14527)

api/core/tools/tool_manager.py

                     db.session.query(BuiltinToolProvider)
                     .filter(
                         BuiltinToolProvider.tenant_id == tenant_id,
-                        (BuiltinToolProvider.provider == provider_id)
+                        (BuiltinToolProvider.provider == str(provider_id_entity))
                         | (BuiltinToolProvider.provider == provider_id_entity.provider_name),
                     )
                     .first()