Describe the current behavior / 问题描述 (Mandatory / 必填)

mindie请求do_sample=true，tok不配置，mindie报错，服务退出
报错如下：
[Model] >>> Exception:top_k has to be a strictly positive integer, but is 0
Traceback (most recent call last):
File "/usr/local/python3.9.5/lib/python3.9/site-packages/model_wrapper/standard_model.py", line 47, in generate
request_tokens_np, eos_np = self.model.handle_requests(requests, is_prefill)
File "/usr/local/python3.9.5/lib/python3.9/site-packages/model_wrapper/utils/mf_wrapper.py", line 241, in handle_requests
tokens, eos_np = self.generate_token(requests, block_tables, is_prefill, metadata)
File "/usr/local/python3.9.5/lib/python3.9/site-packages/model_wrapper/utils/mf_wrapper.py", line 212, in generate_token
next_tokens, _ = self.model_runner.forward(input_ids=input_ids,
File "/home/jenkins0/ya/mindformers-dev/mindformers/model_runner.py", line 190, in forward
logits_warper = self.model.get_logits_warper(self.generation_config)
File "/home/jenkins0/ya/mindformers-dev/mindformers/generation/text_generator.py", line 238, in get_logits_warper
warpers.append(TopKLogitsWarper(top_k=generation_config.top_k, min_tokens_to_keep=min_tokens_to_keep))
File "/home/jenkins0/ya/mindformers-dev/mindformers/generation/logits_process.py", line 214, in init
raise ValueError(
ValueError: top_k has to be a strictly positive integer, but is 0

Environment / 环境信息 (Mandatory / 必填)

• Hardware Environment(Ascend/GPU/CPU) / 硬件环境:

Please delete the backend not involved / 请删除不涉及的后端:
/device ascend 910b3

• Software Environment / 软件环境 (Mandatory / 必填):
  -- MindSpore version (e.g., 1.7.0.Bxxx) :mindspore 2.3.0 .B521
  -- Python version (e.g., Python 3.7.5) :
  -- OS platform and distribution (e.g., Linux Ubuntu 16.04):
  -- GCC/Compiler version (if compiled from source):

• Excute Mode / 执行模式 (Mandatory / 必填)(PyNative/Graph):

Please delete the mode not involved / 请删除不涉及的模式:
/mode pynative
/mode graph

Related testcase / 关联用例 (Mandatory / 必填)

Steps to reproduce the issue / 重现步骤 (Mandatory / 必填)

1. 拉起mindie服务
2. 发送请求，do_sample=true，tok不配置

Describe the expected behavior / 预期结果 (Mandatory / 必填)

Related log / screenshot / 日志 / 截图 (Mandatory / 必填)

Special notes for this issue/备注 (Optional / 选填)