QRCodeScannerController: Use Lens as fallback activity

When .mlkit.barcode.ui.PlatformBarcodeScanningActivityProxy cannot be found
(such as on non-Tensor devices), the tile will never works.

Add a fallback mechanism to use Lens as it can also scan QRCode as well.

Signed-off-by: Dmitrii <bankersenator@gmail.com>
1 file changed