avm2: Improve output of `Font.enumerateFonts()` #27110

Job	Run time
Paths filter	5s
Check dependencies	1m 30s
Test Rust stable / ubuntu-24.04	4m 52s
Lints with Rust stable	3m 53s
Test Rust stable / windows-latest	11m 19s
Lints with Rust beta	6m 24s
Test Rust stable / macos-14	3m 7s
Lints with Rust nightly	4m 18s
Test Rust nightly / ubuntu-24.04	4m 29s
Test Rust ${{ matrix.rust_version }} / ${{ matrix.os }}	0s
Test Rust beta / ubuntu-24.04	4m 35s
	44m 32s

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