Prevent the route announcer from being visible #19869

Job	Run time
Build: ubuntu-latest	1m 45s
Build: windows-latest	1m 26s
Lint	1m 18s
Test (Smoke): ubuntu-latest (node@18)	6m 28s
Test (E2E): ubuntu-latest (node@18.17.1)	3m 27s
Test (Smoke): windows-latest (node@18)	10m 4s
Test (E2E): windows-latest (node@18.17.1)	8m 16s
Test: ubuntu-latest (node@18)	4m 11s
Test: ubuntu-latest (node@20.5.1)	5m 59s
Test: macos-latest (node@18)	5m 22s
Test: windows-latest (node@18.17.1)	9m 30s
	57m 46s

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