fix(QBMapper): Fix findEntities() return type to be list<T> #13565

Job	Run time
changes	7s
integration-sqlite (capabilities_features, 8.1, main)	1m 1s
integration-sqlite (collaboration_features, 8.1, main)	2m 57s
integration-sqlite (comments_features, 8.1, main)	3m 44s
integration-sqlite (dav_features, 8.1, main)	5m 0s
integration-sqlite (features, 8.1, main)	7m 33s
integration-sqlite (federation_features, 8.1, main)	2m 43s
integration-sqlite (--tags ~@large files_features, 8.1, main)	7m 46s
integration-sqlite (filesdrop_features, 8.1, main)	2m 39s
integration-sqlite (openldap_features, 8.1, main)	1m 52s
integration-sqlite (openldap_numerical_features, 8.1, main)	2m 52s
integration-sqlite (ldap_features, 8.1, main)	1m 30s
integration-sqlite (remoteapi_features, 8.1, main)	2m 20s
integration-sqlite (setup_features, 8.1, main)	2m 23s
integration-sqlite (sharees_features, 8.1, main)	6m 9s
integration-sqlite (sharing_features, 8.1, main)	12m 16s
integration-sqlite (videoverification_features, 8.1, main)	4m 1s
integration-sqlite-summary	10s
	1h 7m 3s

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