fix: block moving files to it's own parent with dav #15731

Job	Run time
changes	6s
integration-sqlite (capabilities_features, 8.1, main)	1m 48s
integration-sqlite (collaboration_features, 8.1, main)	2m 19s
integration-sqlite (comments_features, 8.1, main)	2m 42s
integration-sqlite (dav_features, 8.1, main)	8m 7s
integration-sqlite (features, 8.1, main)	8m 43s
integration-sqlite (federation_features, 8.1, main)	4m 5s
integration-sqlite (--tags ~@large files_features, 8.1, main)	12m 4s
integration-sqlite (filesdrop_features, 8.1, main)	1m 49s
integration-sqlite (openldap_features, 8.1, main)	2m 9s
integration-sqlite (openldap_numerical_features, 8.1, main)	2m 21s
integration-sqlite (ldap_features, 8.1, main)	2m 17s
integration-sqlite (remoteapi_features, 8.1, main)	2m 25s
integration-sqlite (setup_features, 8.1, main)	1m 12s
integration-sqlite (sharees_features, 8.1, main)	4m 54s
integration-sqlite (sharing_features, 8.1, main)	12m 8s
integration-sqlite (videoverification_features, 8.1, main)	4m 12s
integration-sqlite-summary	5s
	1h 13m 26s

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