Add tests for hard and soft links #31253

Job	Run time
Determine changes	12s
cargo fmt	24s
mkdocs	2m 32s
pre-commit	35s
python package	1m 25s
cargo build (msrv)	3m 11s
benchmarks	4m 52s
cargo build (release)	5m 3s
cargo clippy	1m 53s
cargo shear	25s
cargo fuzz	4m 42s
cargo test (wasm)	1m 21s
cargo test (linux)	3m 47s
cargo test (windows)	8m 31s
formatter instabilities and black similarity	0s
test scripts	1m 11s
ecosystem	8m 32s
test ruff-lsp	13s
Fuzz the parser	0s
	48m 49s

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