fix: GPS search clock stops with the receiver; L2 cursor survives accented keys; lighter, scrolling quick panel

- GPS: stop() resets the sky state so the 'Searching' timer does not run
  while the receiver is off; the status page shows it only when GPS is on.
- L2 keyboard: put the FOCUSED state back after typing a key or picking a
  variant, so the cursor is drawn again after characters like a-ogonek.
- Quick panel: drop the full-screen dim (a blend per frame), so the screen
  below stays interactive; tiles are one sideways-scrolling, snapping row;
  the brightness slider no longer animates and only updates the backlight
  when the value changes.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VeBrxKyHHxWsmttVkUdBrj

src/helpers/sensors/MicroNMEALocationProvider.h

@@ -104,6 +104,9 @@ public :
     }
 
     void stop() override {
+#ifdef GPS_SKYVIEW
+        _sky.reset();   // a receiver that is off is not searching: stop the TTFF clock
+#endif
         if (_pin_en != -1) {
             digitalWrite(_pin_en, !GPS_EN_ACTIVE);
         }