Use `line-length` setting for isort #20753

Job	Run time
cargo clippy	2m 36s
Determine changes	11s
cargo fmt	18s
cargo test \| ubuntu-latest	5m 30s
cargo fuzz	5m 46s
cargo test \| windows-latest	7m 23s
cargo test (wasm)	1m 46s
cargo udeps	3m 42s
python package	1m 46s
test scripts	1m 12s
benchmarks	12m 45s
mkdocs	2m 20s
pre-commit	1m 41s
Formatter ecosystem and progress checks	0s
test ruff-lsp	29s
ecosystem	5m 53s
	53m 18s

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