[`E721`] Flag comparisons to `memoryview` #21283

Job	Run time
benchmarks	12m 27s
cargo clippy	1m 51s
cargo fmt	15s
cargo fuzz	5m 40s
cargo test (linux)	5m 35s
cargo test (wasm)	1m 31s
cargo test (windows)	7m 19s
cargo udeps	3m 26s
Determine changes	8s
mkdocs	2m 15s
pre-commit	38s
python package	1m 9s
test scripts	48s
formatter instabilities and black similarity	0s
ecosystem	7m 21s
test ruff-lsp	20s
	50m 43s

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