wasi:filesystem@0.3.0-rc-2025-09-16: Add tests for unlink errors #696

Job	Run time
Build Rust tests (windows-latest)	49s
Build Assemblyscript tests (ubuntu-latest)	21s
Build C tests (windows-latest)	44s
Build C tests (macos-latest)	13s
Build C tests (ubuntu-latest)	14s
Build Rust tests (ubuntu-latest)	55s
Build Assemblyscript tests (macos-latest)	15s
Build Assemblyscript tests (windows-latest)	20s
Build Rust tests (windows-11-arm)	1m 0s
Build Assemblyscript tests (windows-11-arm)	23s
Build C tests (windows-11-arm)	55s
Build Rust tests (macos-latest)	59s
Run tests (windows-latest, wasmtime)	1m 18s
Run tests (ubuntu-latest, wasmtime)	30s
Run tests (macos-latest, wasmtime)	25s
Run tests (windows-11-arm, wasmtime)	55s
upload_test_binaries	0s
	10m 16s

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