Modify scanning area to landscape.

With the latest update that limits the use of Unified horizontally on the iPad, when scanning documents, the rectangle that appears as a template to fit the document, is enlarged taking advantage of the horizontal format.

This is hurting us in the speed of check-ins, because to fit the document in that marked area, it forces us to bring the document too close to the camera, generating blurs and shadows, so it does not catch it the first time and we have to keep "trying".

This does not happen on the iPhone, since the reference area is smaller in scale when used vertically, it fits more easily and is very fast.

We need to reduce this capture area so that its use is similar to that of the iPhone, and to have the same speed when scanning the documentation.