Fix multiline-format string for python 3.10

[ProExpertProg]

Purpose

Fix the format string which is invalid syntax in python 3.10.

Test Plan

CI

Test Result

?

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• The purpose of the PR, such as "Fix some issue (link existing issues this PR will resolve)".
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[gemini-code-assist]

Code Review

This pull request refactors the construction of the impl_uuids_str variable in vllm/compilation/passes/ir/lowering_pass.py by replacing a nested f-string expression with string concatenation. This change likely improves readability or ensures compatibility with older Python versions. There were no review comments provided, and I have no additional feedback to offer.

[fynnsu]

Yeah this fixes the 3.10 syntax issue I saw.