fix: sanitize attendee status on create and specific changes #9244

Job	Run time
changes	6s
integration-sqlite (capabilities_features, 8.2, main)	6m 3s
integration-sqlite (collaboration_features, 8.2, main)	8m 53s
integration-sqlite (comments_features, 8.2, main)	6m 20s
integration-sqlite (dav_features, 8.2, main)	8m 56s
integration-sqlite (features, 8.2, main)	13m 24s
integration-sqlite (federation_features, 8.2, main)	7m 56s
integration-sqlite (--tags ~@large files_features, 8.2, main)	16m 12s
integration-sqlite (filesdrop_features, 8.2, main)	4m 30s
integration-sqlite (openldap_features, 8.2, main)	5m 36s
integration-sqlite (openldap_numerical_features, 8.2, main)	3m 50s
integration-sqlite (ldap_features, 8.2, main)	5m 50s
integration-sqlite (remoteapi_features, 8.2, main)	5m 13s
integration-sqlite (setup_features, 8.2, main)	3m 43s
integration-sqlite (sharees_features, 8.2, main)	7m 16s
integration-sqlite (sharing_features, 8.2, main)	19m 10s
integration-sqlite (videoverification_features, 8.2, main)	11m 6s
integration-sqlite-summary	4s
	2h 14m 8s

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