vadilation: false positive

[josm.sanspourriel]

https://josm.openstreetmap.de/browser/josm/trunk/resources/data/validator/unnecessary.mapcss

Casa is considered as a description. Fine in Spanish speaking countries but in France it's a brand.
​http://osmose.openstreetmap.fr/fr/error/785dfe4e-fa23-f701-4d03-520fc89ad904

​https://www.openstreetmap.org/way/181503336

[Klumbumbus]

In 16653/josm:

• fix #19395 - Don't warn about name=Casa (french brand name)
• add name as alternative autocomplete key for alt_name in traffic_sign=city_limit preset