Revert "fix(es/minifier): respect ecma for iife temp vars (#11873)"

[hardfist]

This reverts commit e481934.
#11873 may break #8246 again

Description:

BREAKING CHANGE:

Related issue (if exists):

[chatgpt-codex-connector]

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[codspeed-hq]

Merging this PR will not alter performance

✅ 219 untouched benchmarks
⏩ 31 skipped benchmarks¹

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_{Comparing hardfist:revert-11873-fix/minifier-ecma5-iife-temp-var (4408e2e) with main (7b57d1f)}

Footnotes

1. 31 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

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Latest commit: 4408e2e

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