[`flake8-bugbear`] Implement `return-in-generator` (`B901`) #28974

Job	Run time
Determine changes	11s
mkdocs	1m 59s
cargo fmt	18s
pre-commit	29s
python package	1m 17s
benchmarks	3m 58s
cargo fuzz	4m 10s
cargo clippy	1m 35s
cargo build (release)	4m 13s
cargo shear	21s
cargo test (wasm)	1m 22s
cargo test (windows)	7m 13s
cargo test (linux)	3m 9s
formatter instabilities and black similarity	0s
test scripts	55s
ecosystem	9m 21s
test ruff-lsp	24s
Fuzz the parser	0s
	40m 55s

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