[`pylint`] Avoid false-positive slot non-assignment for `dict` (`PLE0237`) #25619

Job	Run time
cargo fmt	15s
python package	1m 6s
mkdocs	2m 18s
Determine changes	8s
pre-commit	27s
cargo clippy	1m 46s
cargo test (linux)	3m 58s
cargo test (wasm)	1m 22s
cargo test (windows)	6m 15s
cargo fuzz	5m 11s
test scripts	49s
benchmarks	4m 18s
cargo udeps	1m 58s
formatter instabilities and black similarity	0s
test ruff-lsp	14s
ecosystem	8m 26s
	38m 31s

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