avm2: Create fast path for Math.pow with finite arguments #30787

Job	Run time
Paths filter	9s
Lints with Rust nightly	5m 28s
Coverage Report	10m 52s
Lints with Rust beta	4m 3s
Lints with Rust stable	5m 38s
Test Rust stable / ubuntu-24.04-arm	5m 27s
Test Rust stable / ubuntu-24.04	7m 45s
Test Rust stable / windows-2025	11m 9s
Test Rust beta / ubuntu-24.04	5m 31s
Test Rust stable / macos-15	5m 25s
Test Rust nightly / ubuntu-24.04	6m 57s
Check dependencies	55s
Lints with Rust ${{ matrix.rust_version }}	-1s
Test Rust ${{ matrix.rust_version }} / ${{ matrix.os }}	-1s
	1h 9m 17s

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