[stable32] fix(UserMountCache): Add back unique index for oc_mounts and use normal insert #36547

Job	Run time
changes	11s
integration-sqlite (comments_features, 8.1, stable32, stable32)	2m 57s
integration-sqlite (capabilities_features, 8.1, stable32, stable32)	1m 59s
integration-sqlite (collaboration_features, 8.1, stable32, stable32)	3m 46s
integration-sqlite (dav_features, 8.1, stable32, stable32)	5m 16s
integration-sqlite (filesdrop_features, 8.1, stable32, stable32)	1m 47s
integration-sqlite (ldap_features, 8.1, stable32, stable32)	1m 46s
integration-sqlite (files_reminders, 8.1, stable32, stable32)	58s
integration-sqlite (routing_features, 8.1, stable32, stable32)	1m 56s
integration-sqlite (file_conversions, 8.1, stable32, stable32)	2m 50s
integration-sqlite (setup_features, 8.1, stable32, stable32)	1m 58s
integration-sqlite (--tags ~@large files_features, 8.1, stable32, stable32)	17m 5s
integration-sqlite (remoteapi_features, 8.1, stable32, stable32)	2m 13s
integration-sqlite (openldap_numerical_features, 8.1, stable32, stable32)	1m 9s
integration-sqlite (features, 8.1, stable32, stable32)	8m 14s
integration-sqlite (theming_features, 8.1, stable32, stable32)	1m 30s
integration-sqlite (videoverification_features, 8.1, stable32, stable32)	5m 51s
integration-sqlite (federation_features, 8.1, stable32, stable32)	5m 54s
integration-sqlite (sharees_features, 8.1, stable32, stable32)	4m 12s
integration-sqlite (openldap_features, 8.1, stable32, stable32)	2m 52s
integration-sqlite (sharing_features, 8.1, stable32, stable32)	22m 46s
integration-sqlite-summary	8s
	1h 37m 18s

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