fix(appconfig-userpreference): Fix doc types for returned arrays #7672

Job	Run time
gate	9s
Playwright setup	4m 53s
Playwright tests for installer	8m 51s
Playwright tests 5 / 8	12m 29s
Playwright tests 4 / 8	13m 56s
Playwright tests 8 / 8	10m 19s
Playwright tests 2 / 8	14m 30s
Playwright tests 3 / 8	15m 59s
Playwright tests 7 / 8	8m 18s
Playwright tests 1 / 8	10m 7s
Playwright tests 6 / 8	13m 1s
playwright-test-summary	6s
merge-reports	1m 14s
	1h 53m 52s

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