"view as" banner: add a tooltip so that users understand better what the screen does #3572

Job	Run time
build_and_test (3.11, 22.x, :lint:python:client:common:smoke:stubs:)	5m 30s
build_and_test (3.11, 22.x, :server-1-of-2:)	6m 5s
build_and_test (3.11, 22.x, :server-2-of-2:)	11m 49s
build_and_test (3.11, 22.x, :gen-server:)	5m 37s
build_and_test (3.11, 22.x, :nbrowser-^[A-D]:)	10m 59s
build_and_test (3.11, 22.x, :nbrowser-^[E-L]:)	11m 53s
build_and_test (3.11, 22.x, :nbrowser-^[M-N]:)	11m 53s
build_and_test (3.11, 22.x, :nbrowser-^[O-R]:)	5m 37s
build_and_test (3.11, 22.x, :nbrowser-^[^A-R]:)	7m 11s
build_and_test (:lint:python:client:common:smoke:, 22.x, 3.10)	4m 44s
candidate	0s
	1h 21m 18s

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