macOS Modal Buttons

[OskarGroth]

The modal on macOS only has a single action button, or none at all:

So the only way to dismiss the sheet is to press Esc, which can be quite unintuitive.

Furthermore, the custom button design is hard to read with the default theme (and does not fit with macOS design):

I suggest:

• Adding a cancellation button to the sheet
• Aligning all the buttons in their appropriate location (see https://developer.apple.com/documentation/swiftui/toolbaritemplacement/cancellationaction etc)
• Using default macOS buttons that are styled appropriately (default disabled states, primary button using highlight)

[martinlasek]

Closing the issue with the introduction of an x-button for closing the modal in v4.0.0.

As for the "save" button the detail view (including the button) is currently shared across all platforms (iOS, macOS, visionOS, iPad OS). But I can see to implement a separate button for macOS only.

Thanks!