Fix oversized toggle switches on mobile

The global @media (pointer: coarse) rule was forcing min-height: 44px on
toggle button elements, inflating them from 20px to 44px. Added
data-slot="toggle" to all 10 toggle buttons and a CSS override to reset
their min-height, keeping the parent row as the touch target.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

ui/src/pages/InstanceGeneralSettings.tsx

@@ -81,6 +81,7 @@ export function InstanceGeneralSettings() {
           </div>
           <button
             type="button"
+            data-slot="toggle"
             aria-label="Toggle username log censoring"
             disabled={toggleMutation.isPending}
             className={cn(