[`pyflakes`] Stabilize detection of is comparisons to lists, etc. (`F632`) #29903

Job	Run time
Determine changes	8s
pre-commit	48s
mkdocs	2m 59s
cargo fmt	17s
python package	2m 14s
cargo clippy	2m 4s
cargo build (release)	5m 3s
cargo build (msrv)	4m 8s
benchmarks	4m 52s
cargo fuzz	4m 34s
cargo shear	26s
cargo test (linux)	4m 15s
cargo test (wasm)	1m 33s
cargo test (windows)	10m 51s
test scripts	1m 9s
formatter instabilities and black similarity	0s
test ruff-lsp	15s
ecosystem	9m 20s
Fuzz the parser	0s
	54m 56s

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