[infer] fix test bug

[Xu-Kai]

📌 Checklist before creating the PR

• I have created an issue for this PR for traceability
• The title follows the standard format: [doc/gemini/tensor/...]: A concise description
• I have added relevant tags if possible for us to better distinguish different PRs

🚨 Issue number

Link this PR to your issue with words like fixed to automatically close the linked issue upon merge

e.g. fixed #1234, closed #1234, resolved #1234

📝 What does this PR do?

• Fix llama, bloom, chatglm2 test bug.
• Fix llama2 attention test bug.

💥 Checklist before requesting a review

• I have linked my PR to an issue (instruction)
• My issue clearly describes the problem/feature/proposal, with diagrams/charts/table/code if possible
• I have performed a self-review of my code
• I have added thorough tests.
• I have added docstrings for all the functions/methods I implemented

⭐️ Do you enjoy contributing to Colossal-AI?

• 🌝 Yes, I do.
• 🌚 No, I don't.

Tell us more if you don't enjoy contributing to Colossal-AI.

[github-actions]

The code coverage for the changed files is 57%.

Click me to view the complete report

Name                                                              Stmts   Miss  Cover
-------------------------------------------------------------------------------------
colossalai/shardformer/modeling/chatglm2_6b/modeling_chatglm.py     570    239    58%
tests/test_infer/test_bloom_infer.py                                 38     14    63%
tests/test_infer/test_chatglm2_infer.py                              40     14    65%
tests/test_infer/test_llama_infer.py                                 41     15    63%
tests/test_infer_ops/triton/test_llama2_token_attn.py                41     30    27%
-------------------------------------------------------------------------------------
TOTAL                                                               730    312    57%