When CI is scheduled to arm machine, it takes serveral minutes to build the clang-format package for pip install

[zhanglei1949]

Could be avoided by preinstall it on host.
https://github.com/alibaba/neug/actions/runs/29977828652/job/89113335619?pr=771

[github-actions]

🤖 Auto-triage: linked as sub-issue of #257 — Grouping adhoc issues (confidence: high).

Reason: The issue is about CI build performance on ARM runners, specifically avoiding redundant clang-format package builds; this is a CI/build infrastructure improvement that does not fit any specific subsystem umbrella.

Auto-applied: type → Task

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