feat(minifier): merge single var declarations without init into for-of

[sapphi-red]

for-of version of #8812.

[sapphi-red]

• feat(minifier): merge single var declarations without init into for-of #8813 👈 (View in Graphite)
• feat(minifier): merge single var declarations without init into for-in #8812
• feat(minifier): merge expressions in for-in statement head #8811
• main

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[codspeed-hq]

CodSpeed Performance Report

Merging #8813 will not alter performance

_{Comparing 01-31-feat_minifier_merge_single_var_declarations_without_init_into_for-of (f02d9e9) with main (adb8ebd)}

Summary

✅ 33 untouched benchmarks

[Boshen]

Merge activity

• Jan 31, 7:33 AM EST: The merge label '0-merge' was detected. This PR will be added to the Graphite merge queue once it meets the requirements.
• Jan 31, 7:33 AM EST: A user added this pull request to the Graphite merge queue.
• Jan 31, 7:33 AM EST: A user removed this pull request from the Graphite merge queue.
• Jan 31, 7:34 AM EST: The merge label '0-merge' was removed. This PR will no longer be merged by the Graphite merge queue
• Jan 31, 10:30 AM EST: The merge label '0-merge' was detected. This PR will be added to the Graphite merge queue once it meets the requirements.
• Jan 31, 10:31 AM EST: A user added this pull request to the Graphite merge queue.
• Jan 31, 10:51 AM EST: A user merged this pull request with the Graphite merge queue.