fix: css escape when consume string

[ahabhgk]

Summary

fix https://github.com/web-infra-dev/rspack/pull/8492

Checklist

• [ ] Tests updated (or not required).
• [ ] Documentation updated (or not required).

[netlify[bot]]

✅ Deploy Preview for rspack canceled.

Name	Link
🔨 Latest commit	c3bf197f418d52e23a7687964c93d69fe918c4ed
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[codspeed-hq[bot]]

CodSpeed Performance Report

Merging #8495 will not alter performance

_{Comparing fix-css-escape (c3bf197) with main (cbf75a4)}

Summary

✅ 1 untouched benchmarks