docs: add @alert unsafe #5195

Job	Run time
bleeding-check (macos-latest)	1m 44s
build (ubuntu-latest)	3m 23s
coverage-check	20s
bleeding-check (ubuntu-latest)	6s
build (macos-latest)	1m 51s
bleeding-check (windows-latest)	20s
build (macos-13)	3m 12s
build (windows-latest)	2m 0s
bleeding-check (macos-13)	11s
license-header-check	4s
moon-json-format-check	3s
typo-check	5s
nightly-check (ubuntu-latest)	2m 39s
nightly-check (macos-latest)	2m 10s
nightly-check (macos-13)	3m 24s
nightly-check (windows-latest)	1m 50s
	23m 22s

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