feat(hub): reinterpret grouped dock entry category as in-group sub-category #460

Job	Run time
e2e	2m 12s
unit-test / lint	1m 48s
unit-test / test (ubuntu-latest, 26)	2m 22s
unit-test / test (windows-latest, 22)	5m 17s
unit-test / test (windows-latest, 24)	4m 47s
unit-test / test (ubuntu-latest, 24)	2m 21s
unit-test / test (ubuntu-latest, 22)	2m 32s
unit-test / test (windows-latest, 26)	4m 55s
	26m 14s

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