[Wifi transfer] update to the preview image

[atbest]

When scanning QR code using the wifi transfer plugin, the preview image is extremely stretch vertically, making it uncomfortable. I am wondering if it is possible to keep the aspect ratio of the preview image from the camera? Of course, this is not a functional defect. Thanks.

[ghisler(Author)]

Unfortunately I cannot reproduce that, it has the correct aspect ratio on all of my devices.