avm2: Minor performance improvements #30788

Job	Run time
Paths filter	10s
Lints with Rust stable	5m 45s
Lints with Rust beta	4m 18s
Check dependencies	49s
Coverage Report	12m 34s
Lints with Rust nightly	4m 19s
Test Rust stable / ubuntu-24.04	7m 39s
Test Rust stable / macos-15	6m 43s
Test Rust stable / ubuntu-24.04-arm	5m 4s
Test Rust nightly / ubuntu-24.04	10m 23s
Test Rust stable / windows-2025	11m 10s
Test Rust beta / ubuntu-24.04	6m 48s
Lints with Rust ${{ matrix.rust_version }}	0s
Test Rust ${{ matrix.rust_version }} / ${{ matrix.os }}	0s
	1h 15m 42s

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