refactor(SetupManager): user ID retrieval once #40287

Job	Run time
changes	15s
integration-sqlite (features, 8.4, main, master)	15m 44s
integration-sqlite (collaboration_features, 8.4, main, master)	4m 19s
integration-sqlite (dav_features, 8.4, main, master)	9m 55s
integration-sqlite (federation_features, 8.4, main, master)	4m 20s
integration-sqlite (comments_features, 8.4, main, master)	2m 46s
integration-sqlite (capabilities_features, 8.4, main, master)	1m 59s
integration-sqlite (--tags ~@large files_features, 8.4, main, master)	19m 9s
integration-sqlite (sharees_features, 8.4, main, master)	13m 25s
integration-sqlite (sharing_features, 8.4, main, master)	21m 57s
integration-sqlite (routing_features, 8.4, main, master)	1m 56s
integration-sqlite (remoteapi_features, 8.4, main, master)	1m 10s
integration-sqlite (theming_features, 8.4, main, master)	2m 15s
integration-sqlite (openldap_features, 8.4, main, master)	1m 46s
integration-sqlite (file_conversions, 8.4, main, master)	1m 59s
integration-sqlite (videoverification_features, 8.4, main, master)	5m 57s
integration-sqlite (filesdrop_features, 8.4, main, master)	2m 17s
integration-sqlite (files_reminders, 8.4, main, master)	1m 7s
integration-sqlite (openldap_numerical_features, 8.4, main, master)	1m 44s
integration-sqlite (setup_features, 8.4, main, master)	1m 23s
integration-sqlite (ldap_features, 8.4, main, master)	2m 20s
integration-sqlite-summary	6s
	1h 57m 49s

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