Avoid off-by-one error in stripping noqa following multi-byte char #22286

Job	Run time
pre-commit	27s
Determine changes	9s
mkdocs	2m 10s
cargo fmt	13s
python package	1m 8s
cargo test (linux)	3m 37s
cargo test (wasm)	1m 16s
cargo clippy	1m 49s
cargo fuzz	4m 32s
cargo test (windows)	4m 10s
cargo udeps	1m 53s
test scripts	48s
benchmarks	9m 27s
formatter instabilities and black similarity	0s
test ruff-lsp	20s
ecosystem	7m 44s
	39m 43s

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