System image not being displayed when AlertToast added to a package.

[antokne]

Describe the bug
When using AlertToast in a package, displaying a toast of displayMode type .alert neither a systemImage or Image are displayed.

To Reproduce
Steps to reproduce the behavior:

1. Add AlertToast into a package. and create a SwiftUI view
2. Set up an alert eg:

.toast(isPresenting: $showToast) {
    AlertToast(displayMode: .alert, type: .systemImage("pause.circle", .red), style: .style(backgroundColor: .black))
}

4. Verify that the system image does not display in preview.
5. Change to .hud type. image does display.

Expected behavior
System image should be visible.

Screenshots

Using .alert

Using .hud

Desktop (please complete the following information):

• OS: iOS 16.4
• Xcode Version 14.3 (14E222b)

Verified this works when displaying in a SwiftUI view in app not in a package.