How do you enable "Display Zoom" mode in SwiftUI preview?
On a phone, you get to it from Settings, Display & Brightness, Display Zoom. Choose Standard or Zoomed.
On the simulator you can set it from Settings, Developer, Display Zoom.
But I don't see a way to set this in SwiftUI preview.
Sadly, many iOS features are not usable in a SwiftUI canvas preview. Display Zoom is one of them.