dashboard/app: fix up top menu #18475

Job	Run time
build	4m 23s
race	7m 4s
gvisor	4m 10s
aux	3m 33s
race_dashboard	3m 17s
old	7m 6s
arch (presubmit_arch_freebsd)	6m 27s
dashboard	2m 29s
arch (presubmit_arch_netbsd)	3m 51s
arch (presubmit_arch_openbsd)	3m 48s
arch (presubmit_arch_windows)	3m 15s
arch (presubmit_arch_darwin)	3m 43s
arch (presubmit_arch_executor)	3m 11s
arch (presubmit_arch_linux)	10m 45s
	1h 7m 2s

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