feat(dashboard): ability to locate new admin route under existing route #34975

Job	Run time
setup	5m 47s
integration-tests-packages	17m 39s
Shard (0) Unit Tests	13m 33s
Shard (0) HTTP Integration Tests	16m 36s
Shard (1) Unit Tests	9m 35s
Shard (1) HTTP Integration Tests	13m 21s
Shard (0) Module Integration Tests	15m 12s
Shard (1) Module Integration Tests	13m 47s
unit-tests	1s
integration-tests-modules	2s
integration-tests-http	1s
	1h 45m 34s

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