[Feature] Support limit thinking len for text models (#3527)

* support limit thinking len

* remove default think_end_id

* remove reasoning_max_tokens

* update think_end_id for ernie

* update think_end_id for ernie.

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Co-authored-by: K11OntheBoat <“ruianmaidanglao@163.com”>
Co-authored-by: luukunn <981429396@qq.com>

fastdeploy/config.py

@@ -118,6 +118,7 @@ class ModelConfig:
         self.enable_redundant_experts = False
         self.redundant_experts_num = 0
         self.quantization = None
+        self.think_end_id = None
         for key, value in args.items():
             if hasattr(self, key):
                 setattr(self, key, value)