fix: integrations settings squish on mobile (#812) + polish

PhotoProvidersSection:
- Replace raw <input type=checkbox> with TREK's ToggleSwitch so the
  'spiegeln zu Immich'-style options match the rest of the app.
- Wrap action row in flex-wrap so the connected/disconnected badge
  drops to its own line on mobile instead of clipping.
- Add a short 'Test' translation (memories.testShort) shown on mobile
  in place of 'Test connection' — 14 languages kept in sync.

ToggleSwitch:
- Explicit type='button' (never a form submitter), minWidth + flex-
  shrink:0 so the toggle doesn't get squished next to long labels,
  padding:0 so no inherited UA margin warps the inner circle.

MapSettingsTab:
- 'Mapbox' instead of 'Mapbox GL' on narrow screens — the provider
  card is too cramped on mobile for the full name.
- Drop the 'Experimental' badge on mobile entirely; it overlapped
  the title at that width. Still shown on >=sm.

DisplaySettingsTab:
- Time format buttons show just '24h' / '12h' on mobile; the '(14:30)'
  / '(2:30 PM)' hint stays on >=sm. Test updated to match the role
  query since the label is now split across nodes.

client/src/components/Settings/DisplaySettingsTab.tsx

@@ -188,8 +188,8 @@ export default function DisplaySettingsTab(): React.ReactElement {
         <label className="block text-sm font-medium mb-2" style={{ color: 'var(--text-secondary)' }}>{t('settings.timeFormat')}</label>
         <div className="flex gap-3">
           {[
-            { value: '24h', label: '24h (14:30)' },
-            { value: '12h', label: '12h (2:30 PM)' },
+            { value: '24h', short: '24h', example: '14:30' },
+            { value: '12h', short: '12h', example: '2:30 PM' },
           ].map(opt => (
             <button
               key={opt.value}
@@ -207,7 +207,8 @@ export default function DisplaySettingsTab(): React.ReactElement {
                 transition: 'all 0.15s',
               }}
             >
-              {opt.label}
+              {opt.short}
+              <span className="hidden sm:inline">{` (${opt.example})`}</span>
             </button>
           ))}
         </div>