[red-knot] type narrowing #32011

Job	Run time
mkdocs	2m 23s
cargo fmt	16s
Determine changes	12s
pre-commit	31s
python package	1m 15s
cargo build (msrv)	3m 49s
cargo clippy	1m 57s
cargo build (release)	4m 42s
benchmarks	4m 49s
cargo fuzz	5m 1s
cargo shear	25s
cargo test (linux)	4m 53s
cargo test (wasm)	1m 39s
cargo test (windows)	9m 30s
formatter instabilities and black similarity	3m 44s
test scripts	55s
test ruff-lsp	14s
ecosystem	14m 12s
Fuzz the parser	5m 33s
	1h 6m 0s

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