Add an example of an unsafe fix #19951

Job	Run time
cargo clippy	2m 50s
Determine changes	10s
cargo fmt	19s
cargo fuzz	6m 5s
cargo test \| ubuntu-latest	5m 46s
cargo test (wasm)	1m 38s
cargo test \| windows-latest	9m 0s
test scripts	1m 4s
cargo udeps	2m 51s
mkdocs	2m 37s
pre-commit	1m 45s
python package	1m 51s
benchmarks	15m 28s
Formatter ecosystem and progress checks	0s
ecosystem	0s
	51m 24s

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