fix(metdata): Correctly handle FilesMetadataNotFoundException on blurhash generation #2648

Job	Run time
changes	8s
integration-sqlite (capabilities_features, 8.2, main)	4m 52s
integration-sqlite (collaboration_features, 8.2, main)	6m 25s
integration-sqlite (comments_features, 8.2, main)	6m 54s
integration-sqlite (dav_features, 8.2, main)	10m 7s
integration-sqlite (features, 8.2, main)	12m 53s
integration-sqlite (federation_features, 8.2, main)	7m 56s
integration-sqlite (--tags ~@large files_features, 8.2, main)	14m 45s
integration-sqlite (filesdrop_features, 8.2, main)	4m 41s
integration-sqlite (openldap_features, 8.2, main)	5m 39s
integration-sqlite (openldap_numerical_features, 8.2, main)	4m 48s
integration-sqlite (ldap_features, 8.2, main)	5m 16s
integration-sqlite (remoteapi_features, 8.2, main)	4m 26s
integration-sqlite (setup_features, 8.2, main)	4m 13s
integration-sqlite (sharees_features, 8.2, main)	7m 51s
integration-sqlite (sharing_features, 8.2, main)	21m 59s
integration-sqlite (videoverification_features, 8.2, main)	9m 42s
integration-sqlite-summary	6s
	2h 12m 41s

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