[Analytics] Use fallback languages for LocalizedFields

Right now, Anaytics only displays values in the requested language. If no translation for this language exists, it doesn't show any value. Unlike Caluma does.

https://github.com/projectcaluma/caluma/blob/809a75d46c76edfca4bda4c02aff25e928b1244a/caluma/caluma_analytics/sql.py#L251