Simplify camera presentation to reduce frame errors

- Changed back to standard .fullScreen presentation
- Removed overFullScreen which was causing frame dimension errors
- Let iOS handle safe areas automatically (white bars are intentional)
- Reduces gesture gate timeout warnings

Note: White bars on notched devices are iOS default behavior for
UIImagePickerController. This respects safe areas for status bar
and home indicator. True edge-to-edge would require custom AVFoundation
camera implementation.

bitchat/Views/ContentView.swift

@@ -2151,12 +2151,8 @@ struct ImagePickerView: UIViewControllerRepresentable {
         picker.delegate = context.coordinator
         picker.allowsEditing = false
 
-        // Configure for true full-screen presentation
-        picker.modalPresentationStyle = .overFullScreen
-        if sourceType == .camera {
-            picker.showsCameraControls = true
-            picker.cameraOverlayView = nil
-        }
+        // Use standard full screen - iOS handles safe areas automatically
+        picker.modalPresentationStyle = .fullScreen
 
         return picker
     }