feat(minifier): fold switch stmt whose parent is not block stmt

[armano2]

Move removal of dead code from switch stmts to remove_dead_code, this change enables processing of switch stmts whose parent is not list of stmts

current minification processes stmts whose parents are block stmts and they are last stmt of set block, this change also allows us to remove empty blocks and last break from switch cases whose parent is not block stmt

if (a) { b(); if (c) switch (d) { case 1: case 2: break; } c(); }
//            ^~~~~~ due to body not being a block we where not able to process this

// Current:
if (a) { if (b(), c) switch (d) { case 1: case 2: break } c() }
//                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ this switch case is not being processed

// This branch:
a && (b(), c && d, c());
//              ^ switch cases can be correctly processed

note: this change applies only dce, and dosn't substitute switch stmts with if'stmts

changes in stack:

• feat(minifier): substitute switch with one stmt whose parent is not block #25405
• feat(minifier): fold switch stmt whose parent is not block stmt #25403 👈
• main

[codspeed-hq]

Merging this PR will not alter performance

✅ 62 untouched benchmarks
⏩ 19 skipped benchmarks¹

---

_{Comparing armano2:feat/try_fold_switch-in-dce (797c8ec) with main (fd61cd8)}

Footnotes

1. 19 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. ↩

[Dunqing]

@codex review

[Dunqing]

/monitor-oxc run

[oxc-guard]

Monitor Oxc

Commit: ce668f0d6c83

suite	result
Build	✅
Test262	✅
Uglify Corpus	✅
Isolated Declarations	✅
(compressor)	✅
Runtime Bundles	✅
(formatter)	❌
(codegen)	✅
(dce)	✅
(formatter_dcr)	✅
(whitespace)	✅
(mangler)	❌
(transformer)	✅
Runtime (es-toolkit)	✅
Runtime (solid)	✅
Runtime (zod)	❌
Runtime (svelte)	✅
Runtime (vue)	✅

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. Delightful!

Reviewed commit: ce668f0d6c

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[Dunqing]

Thank you!