Add `unused-ignore-comment` rule (#15084) #37825

Job	Run time
Determine changes	9s
cargo fmt	20s
cargo build (release)	5m 8s
pre-commit	3m 2s
python package	1m 16s
mkdocs	2m 37s
cargo clippy	1m 49s
benchmarks	4m 59s
cargo build (msrv)	4m 19s
cargo fuzz build	5m 20s
cargo shear	20s
cargo test (linux)	1m 58s
cargo test (linux, release)	3m 44s
cargo test (wasm)	1m 29s
cargo test (windows)	3m 33s
formatter instabilities and black similarity	3m 9s
test scripts	1m 4s
test ruff-lsp	35s
fuzz parser	0s
ecosystem	0s
	44m 51s

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