fix: gitee ai wrong default model, and better para (#11168)

Signed-off-by: yihong0618 <zouzou0208@gmail.com>

api/core/model_runtime/model_providers/gitee_ai/llm/llm.py

@@ -32,12 +32,12 @@ class GiteeAILargeLanguageModel(OAIAPICompatLargeLanguageModel):
         return super()._invoke(model, credentials, prompt_messages, model_parameters, tools, stop, stream, user)
 
     def validate_credentials(self, model: str, credentials: dict) -> None:
-        self._add_custom_parameters(credentials, model, None)
+        self._add_custom_parameters(credentials, None)
         super().validate_credentials(model, credentials)
 
-    def _add_custom_parameters(self, credentials: dict, model: str, model_parameters: dict) -> None:
+    def _add_custom_parameters(self, credentials: dict, model: Optional[str]) -> None:
         if model is None:
-            model = "bge-large-zh-v1.5"
+            model = "Qwen2-72B-Instruct"
 
         model_identity = GiteeAILargeLanguageModel.MODEL_TO_IDENTITY.get(model, model)
         credentials["endpoint_url"] = f"https://ai.gitee.com/api/serverless/{model_identity}/"
@@ -47,5 +47,7 @@ class GiteeAILargeLanguageModel(OAIAPICompatLargeLanguageModel):
             credentials["mode"] = LLMMode.CHAT.value
 
         schema = self.get_model_schema(model, credentials)
+        assert schema is not None, f"Model schema not found for model {model}"
+        assert schema.features is not None, f"Model features not found for model {model}"
         if ModelFeature.TOOL_CALL in schema.features or ModelFeature.MULTI_TOOL_CALL in schema.features:
             credentials["function_calling_type"] = "tool_call"