pkg/fuzzer/queue: add Status.String #16079

Job	Run time
dashboard	5m 3s
aux	4m 11s
arch (presubmit_arch_linux)	10m 12s
build	6m 14s
arch (presubmit_arch_freebsd)	6m 8s
old	7m 5s
arch (presubmit_arch_netbsd)	3m 48s
race	9m 12s
arch (presubmit_arch_openbsd)	3m 49s
race_dashboard	6m 4s
arch (presubmit_arch_darwin)	3m 42s
arch (presubmit_arch_windows)	3m 38s
gvisor	3m 36s
arch (presubmit_arch_executor)	3m 22s
	1h 16m 4s

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