fix: ensure array returned from getMountsForFileId is continious #8544

Job	Run time
changes	8s
integration-sqlite (capabilities_features, 8.2, main)	1m 7s
integration-sqlite (collaboration_features, 8.2, main)	6m 54s
integration-sqlite (comments_features, 8.2, main)	5m 45s
integration-sqlite (dav_features, 8.2, main)	11m 5s
integration-sqlite (features, 8.2, main)	12m 55s
integration-sqlite (federation_features, 8.2, main)	8m 25s
integration-sqlite (--tags ~@large files_features, 8.2, main)	6m 34s
integration-sqlite (filesdrop_features, 8.2, main)	57s
integration-sqlite (openldap_features, 8.2, main)	1m 17s
integration-sqlite (openldap_numerical_features, 8.2, main)	1m 10s
integration-sqlite (ldap_features, 8.2, main)	5m 15s
integration-sqlite (remoteapi_features, 8.2, main)	5m 10s
integration-sqlite (setup_features, 8.2, main)	4m 42s
integration-sqlite (sharees_features, 8.2, main)	8m 18s
integration-sqlite (sharing_features, 8.2, main)	19m 38s
integration-sqlite (videoverification_features, 8.2, main)	3m 25s
integration-sqlite-summary	5s
	1h 42m 50s

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