[`pylint`] Omit stubs from `invalid-bool` and `invalid-str-return-type` #27314

Job	Run time
Determine changes	11s
cargo fmt	16s
pre-commit	38s
python package	1m 18s
mkdocs	2m 34s
cargo clippy	1m 56s
cargo test (wasm)	1m 12s
cargo test (windows)	6m 5s
cargo test (linux)	3m 17s
cargo udeps	1m 57s
cargo fuzz	8m 47s
test scripts	59s
formatter instabilities and black similarity	0s
benchmarks	4m 18s
ecosystem	8m 31s
test ruff-lsp	16s
	42m 15s

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