feat(minifier): inline const variables that are only used once

[Boshen]

Just to get the infrastructure ready.

Other "inline"s are more complicated due to TDZ.

[graphite-app]

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[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #12488 will not alter performance

_{Comparing minifier-inline (b877039) with main (ccf1fb4)¹}

Summary

✅ 34 untouched benchmarks

Footnotes

1. No successful run was found on main (3f6edc9) during the generation of this report, so ccf1fb4 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩

[Boshen]

Merge activity

• Jul 24, 7:58 AM UTC: The merge label '0-merge' was detected. This PR will be added to the Graphite merge queue once it meets the requirements.
• Jul 24, 8:07 AM UTC: Boshen added this pull request to the Graphite merge queue.
• Jul 24, 8:16 AM UTC: Merged by the Graphite merge queue.