Overhaul native approval UX and add widget surfaces

Bring the SwiftUI app in line with the Apple-native mock and keep pending approvals actionable from Live Activities and watch complications.

swift/WatchApp/Design/GlassChrome.swift

@@ -0,0 +1,8 @@
+import SwiftUI
+
+public extension View {
+    @ViewBuilder
+    func idpGlassChrome() -> some View {
+        self.background(.thinMaterial)
+    }
+}