Issues accessing HEIC-formatted images from the iOS gallery

Issues accessing HEIC-formatted images from the iOS gallery.

Steps to reproduce:

• enable HEIC images on a test device
• Open iOS gallery from Qt Application
• Select an image

Current result:

• the selected image appears in the QML Image but in a "Thumbnail" / smaller view.
  The resolution of the image, however, appears to 4K (as expected from HEIC format);
  thus the small "thumbnail" image is "padded" with black around it

Expected outcome:

• the image is displayed correctly & the resolution set to the actual image resolution.