repr in typing #14398

Job	Run time
Run rust tests (ubuntu-latest)	5m 18s
Run rust tests (windows-latest)	14m 55s
Run rust tests (macos-latest)	3m 55s
Ensure compilation on various targets	6m 21s
Check the WASM package and demo	4m 5s
Run snippets and cpython tests (ubuntu-latest)	14m 37s
Run snippets and cpython tests (macos-latest)	12m 2s
Run snippets and cpython tests on wasm-wasi	2m 1s
Run tests under miri	2m 49s
Check Rust code with rustfmt and clippy	4m 22s
Run snippets and cpython tests (windows-latest)	26m 17s
	1h 36m 42s

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