Automatically dismiss (now) empty windows

ElementX/Sources/Application/Windowing/WindowManager.swift

@@ -67,9 +67,9 @@ class WindowManager: SecureWindowManagerProtocol {
         openWindowAction(value: type)
     }
     
-    func windowForType(_ type: WindowManagerWindowType) -> AnyView? {
+    func windowForType(_ type: WindowManagerWindowType) -> AnyView {
         guard let coordinator = coordinators[type]?.coordinator else {
-            return nil
+            return AnyView(InstantlyDismissingWindow())
         }
         
         return coordinator.toPresentable()
@@ -179,3 +179,16 @@ private class PassthroughWindow: UIWindow {
         }
     }
 }
+
+/// Whenever restoring an app SwiftUI tries to restore its windows as well
+/// which we're generally not prepared for so use this to just close them instead
+private struct InstantlyDismissingWindow: View {
+    @Environment(\.dismissWindow) var dismissWindow
+    
+    var body: some View {
+        Rectangle()
+            .task {
+                dismissWindow()
+            }
+    }
+}

ElementX/Sources/Application/Windowing/WindowManagerProtocol.swift

@@ -29,7 +29,7 @@ protocol SecureWindowManagerProtocol: WindowManagerProtocol {
     
     func handleRoute(_ appRoute: AppRoute, windowType: WindowManagerWindowType)
     
-    func windowForType(_ type: WindowManagerWindowType) -> AnyView?
+    func windowForType(_ type: WindowManagerWindowType) -> AnyView
     
     /// Shows the main and overlay window combo, hiding the alternate window.
     func switchToMain()