feat: make `NavigationDrawerDestination.label` accept custom controls #1951

Job	Run time
examples/apps Integration Tests	7m 49s
apps Integration Tests	9m 37s
controls/cupertino Integration Tests	22m 26s
examples/core Integration Tests	29m 30s
examples/material Integration Tests	1h 6m 45s
examples/extensions Integration Tests	11m 40s
controls/material Integration Tests	1h 3m 17s
examples/cupertino Integration Tests	15m 55s
extensions Integration Tests	3m 16s
controls/services Integration Tests	8m 20s
controls/theme Integration Tests	10m 46s
controls/core Integration Tests	23m 1s
	4h 32m 22s

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