Background Transparency in the new QRCode Component

Hello @enchev @korchev

I’ve been exploring the new QRCode component, and it’s a fantastic addition!

However, I noticed a minor issue when working with transparent backgrounds. While the general background of the QR code respects the alpha channel correctly, the "eyes" (position detection patterns) do not. Specifically, the area between the outer frame and the inner solid square remains opaque instead of becoming transparent.

Here is what is happening:

Any help is greatly appreciated. Thanks in advance!