`flake8-type-checking`: Always recognise relative imports as first-party #32116

Job	Run time
Determine changes	10s
mkdocs	2m 24s
cargo fmt	23s
pre-commit	39s
python package	1m 17s
cargo build (release)	4m 33s
cargo clippy	1m 55s
benchmarks	5m 21s
cargo build (msrv)	3m 20s
cargo fuzz	4m 12s
cargo shear	23s
cargo test (linux)	4m 32s
cargo test (wasm)	1m 28s
cargo test (windows)	9m 19s
test scripts	1m 1s
formatter instabilities and black similarity	0s
ecosystem	8m 54s
test ruff-lsp	15s
Fuzz the parser	0s
	50m 6s

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