_normalize() lowercased every select's options/state for display, but
that's only needed for entities with a translation_key (whose
strings.json lookup requires lowercase keys, per hassfest). Untranslated
selects (Cycle, Smart Dry, Sound mode, LED brightness) had no lookup to
protect and were just getting mangled -- "AI Wash" became "ai wash",
"ExtraHigh" became "extrahigh", etc.
Replace with _display(), which only lowercases for translation_key
entities and otherwise passes the device's own casing through, with two
cosmetic fixups: a fully lowercase wire value (e.g. "voice") is
title-cased, and a PascalCase value (e.g. "ExtraHigh") gets a space at
the case boundary. Already human-friendly values pass through
untouched. Avoids hand-authoring strings.json translations for
open-ended, per-model option lists (e.g. dishwasher cycle names) that
would silently regress on any value we didn't enumerate.
Marc Billow
9804903fbd