feat(kit): render the sliders with UiSlider

UiSlider takes v-model, min, max, step and disabled
over Core's native range input, emits numbers, and with `hold` never
rewrites a focused handle and takes the model back on blur. It is a
functional render function, so the portable style parameter rows use it
too. The Display, Radio, RTL-SDR, Cockpit, mission replay and style
parameter sliders render with it; server-rendered markup keeps their
default values.

src/ui/radioPanelActions.test.mjs

@@ -64,7 +64,7 @@ test('the panel’s Enable, transport and volume call RadioControls', (t) => {
     ['toggleRadioPlayback'],
     ['cycleRadio', 1],
     ['stopRadio'],
-    ['setRadioVolume', '35'],
+    ['setRadioVolume', 35],
   ]);
 });