Fix `rand` typo #2248

Job	Run time
check	27s
build (ubuntu-24.04, default)	6m 42s
build (ubuntu-24.04, full-system-policy)	4m 40s
build (ubuntu-22.04, default)	4m 20s
build (ubuntu-22.04, full-system-policy)	4m 11s
tests	3m 33s
	23m 53s

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