feat(kit): render the selects with UiSelect

UiSelect renders the bare native select with v-model, options and
disabled. Options that carry their own attributes come through the slot, a
caller's own change handler still reaches the select, and hold never
rewrites a focused select and takes the model back on blur. Without hold, a
select takes its model back once its change has rendered, so a pick its
owner refuses goes back, as the raw value binding did.

The HUD layout, draw colour, RTL-SDR gain, radio station tag, voice
provider, voice timeout, scene and CCTV camera selects now render through
it.

CHANGELOG.md

@@ -68,7 +68,8 @@
   kit's `UiButton`, which gains `pressedClass`; so are the rail card
   chips, map source chips and location pills (which now report
   `aria-pressed`), and the voice card's chips
-  are the kit's new `UiChip`. `syncScopeControls`
+  are the kit's new `UiChip`. The selects are the kit's new `UiSelect`.
+  `syncScopeControls`
   (`./ui/display`) and `shouldHideCollapsedRightPanels` (`./ui/layout`) are
   deprecated: the Display view and the rail now own what they did. `./ui/input` imports Vue
   (samehkhamis).