Refactor `OC\Server::getL10NFactory` #5183

Job	Run time
changes	7s
integration-sqlite (capabilities_features, 8.2, main)	1m 8s
integration-sqlite (collaboration_features, 8.2, main)	2m 1s
integration-sqlite (comments_features, 8.2, main)	1m 58s
integration-sqlite (dav_features, 8.2, main)	4m 22s
integration-sqlite (features, 8.2, main)	14m 10s
integration-sqlite (federation_features, 8.2, main)	8m 36s
integration-sqlite (--tags ~@large files_features, 8.2, main)	4m 10s
integration-sqlite (filesdrop_features, 8.2, main)	50s
integration-sqlite (openldap_features, 8.2, main)	4m 48s
integration-sqlite (openldap_numerical_features, 8.2, main)	4m 42s
integration-sqlite (ldap_features, 8.2, main)	5m 5s
integration-sqlite (remoteapi_features, 8.2, main)	4m 44s
integration-sqlite (setup_features, 8.2, main)	4m 31s
integration-sqlite (sharees_features, 8.2, main)	7m 33s
integration-sqlite (sharing_features, 8.2, main)	27m 13s
integration-sqlite (videoverification_features, 8.2, main)	9m 0s
integration-sqlite-summary	7s
	1h 45m 5s

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