feat(minifier): implement known methods Math.clz32 and Math.imul

[7086cmd]

The known methods module of Number and Math only left Math.pow unimplemented!

[graphite-app]

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[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #12405 will not alter performance

_{Comparing 7086cmd:feat/minifier-math-clz32-imul (ff623b6) with main (2a21d1b)}

Summary

✅ 34 untouched benchmarks

[Copilot]

Pull Request Overview

This PR implements two new known methods for Math in the minifier: Math.clz32 and Math.imul. The PR also introduces a new ToUint32 trait and refactors existing code to use it for proper unsigned 32-bit integer conversions in shift operations.

• Adds ToUint32 trait that builds on ToInt32 for unsigned 32-bit integer conversions
• Implements constant folding for Math.clz32 (count leading zeros) and Math.imul (32-bit integer multiplication)
• Refactors shift operations to use proper unsigned conversion instead of casting

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
crates/oxc_ecmascript/src/to_int_32.rs	Adds ToUint32 trait and comprehensive tests
crates/oxc_ecmascript/src/lib.rs	Exports the new ToUint32 trait
crates/oxc_ecmascript/src/constant_evaluation/call_expr.rs	Implements Math.clz32 and Math.imul constant folding
crates/oxc_ecmascript/src/constant_evaluation/mod.rs	Updates shift operations to use ToUint32
crates/oxc_transformer/src/typescript/enum.rs	Updates enum evaluation to use ToUint32 for shift operations
crates/oxc_isolated_declarations/src/enum.rs	Updates isolated declarations to use ToUint32 for shift operations
crates/oxc_minifier/src/peephole/replace_known_methods.rs	Adds comprehensive tests for the new Math methods

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[sapphi-red]

Based on the request, I took over this one. I rebased on top of #13272 and refactored a bit.

[Copilot]

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