QR Widget should dismiss on tap anywhere, not just the close/down button

When the QR code is opened, it can currently only be dismissed by pressing the dedicated down/close button. Tapping anywhere else on the QR overlay does nothing.
Expected behavior:
Tapping anywhere outside the QR or Swipe/drag down on the QR code should dismiss it and slide it back down.

Locate the QR Widget and reproduce the issue by opening the QR code, then inspect how the overlay handles taps and swipe or drag gestures. Done means tapping outside the QR or swiping or dragging it down dismisses the overlay and slides it back down, while the existing close button continues to work.

Written by the indexing model from the issue text.