fix(files): handle multidimensional arrays in scanner #4441

Job	Run time
changes	7s
integration-sqlite (capabilities_features, 8.2, main)	5m 44s
integration-sqlite (collaboration_features, 8.2, main)	8m 4s
integration-sqlite (comments_features, 8.2, main)	8m 25s
integration-sqlite (dav_features, 8.2, main)	13m 4s
integration-sqlite (features, 8.2, main)	15m 45s
integration-sqlite (federation_features, 8.2, main)	9m 21s
integration-sqlite (--tags ~@large files_features, 8.2, main)	19m 8s
integration-sqlite (filesdrop_features, 8.2, main)	5m 52s
integration-sqlite (openldap_features, 8.2, main)	5m 25s
integration-sqlite (openldap_numerical_features, 8.2, main)	5m 49s
integration-sqlite (ldap_features, 8.2, main)	5m 51s
integration-sqlite (remoteapi_features, 8.2, main)	5m 10s
integration-sqlite (setup_features, 8.2, main)	4m 55s
integration-sqlite (sharees_features, 8.2, main)	9m 47s
integration-sqlite (sharing_features, 8.2, main)	21m 35s
integration-sqlite (videoverification_features, 8.2, main)	10m 18s
integration-sqlite-summary	4s
	2h 34m 24s

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