fix model type (#9250)

### What problem does this PR solve?
 ERROR type model

- [x] Bug Fix (non-breaking change which fixes an issue)

api/db/services/llm_service.py

 
         for llm in LLMService.query(llm_name=llm_id):
             return llm.model_type
+        for llm in TenantLLMService.query(llm_name=llm_id):
+            return llm.model_type
 
 
 class LLMBundle: