Ignore non-abstract class attributes when enforcing B024 #27839

Job	Run time
mkdocs	2m 22s
pre-commit	31s
Determine changes	8s
cargo fmt	16s
python package	1m 16s
cargo clippy	1m 35s
cargo build (release)	4m 56s
cargo fuzz	4m 18s
benchmarks	4m 13s
cargo test (linux)	3m 12s
cargo udeps	1m 56s
cargo test (windows)	6m 17s
cargo test (wasm)	1m 5s
test scripts	56s
formatter instabilities and black similarity	0s
test ruff-lsp	22s
ecosystem	8m 28s
Fuzz the parser	0s
	41m 51s

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