字符无法匹配cann版本时，使用8.5.0

[buaazhangs]

字符无法匹配cann版本时，使用8.5.0

[github-actions]

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[gemini-code-assist]

Code Review

This pull request modifies the CANN version handling in install_npuir.sh and tilelang/utils/npu_utils.py to default to version '8.5.0' rather than erroring out when versions are unrecognized or environment variables are unset. Feedback includes suggestions to add warning messages when falling back to the default version to improve observability and to update Python type hints to support optional string inputs.

[CeleNewYear]

LGTM

[happyhappyhappy-arch]

Support for 9.0.0 was merged unintentionally and is recommended to be directly revert commit 9f5ee68.