Fix dismissal in UIKit demos.

Author: mbrandonw

Examples/CaseStudies/UIKitCaseStudies/LoadThenNavigate.swift

@@ -107,7 +107,7 @@ class LazyNavigationViewController: UIViewController {
   override func viewDidAppear(_ animated: Bool) {
     super.viewDidAppear(animated)
 
-    if !isMovingToParent {
+    if !isMovingToParent && store.optionalCounter != nil {
       store.send(.setNavigation(isActive: false))
     }
   }

Examples/CaseStudies/UIKitCaseStudies/NavigateAndLoad.swift

@@ -100,7 +100,7 @@ class EagerNavigationViewController: UIViewController {
   override func viewDidAppear(_ animated: Bool) {
     super.viewDidAppear(animated)
 
-    if !isMovingToParent {
+    if !isMovingToParent && store.isNavigationActive {
       store.send(.setNavigation(isActive: false))
     }
   }

Examples/TicTacToe/tic-tac-toe/Sources/LoginUIKit/LoginViewController.swift

@@ -126,7 +126,7 @@ public class LoginViewController: UIViewController {
   public override func viewDidAppear(_ animated: Bool) {
     super.viewDidAppear(animated)
 
-    if !isMovingToParent {
+    if !isMovingToParent && store.twoFactor != nil {
       store.twoFactorDismissed()
     }
   }

Examples/TicTacToe/tic-tac-toe/Sources/TwoFactorCore/TwoFactorCore.swift

@@ -33,6 +33,7 @@ public struct TwoFactor: Sendable {
   }
 
   @Dependency(\.authenticationClient) var authenticationClient
+  @Dependency(\.dismiss) var dismiss
 
   public init() {}
 
@@ -57,6 +58,8 @@ public struct TwoFactor: Sendable {
         return .none
 
       case .view(.submitButtonTapped):
+        return .run { _ in await self.dismiss() }
+
         state.isTwoFactorRequestInFlight = true
         return .run { [code = state.code, token = state.token] send in
           await send(

Examples/TicTacToe/tic-tac-toe/Sources/TwoFactorUIKit/TwoFactorViewController.swift

@@ -63,7 +63,7 @@ public final class TwoFactorViewController: UIViewController {
       guard let self else { return }
       activityIndicator.isHidden = store.isActivityIndicatorHidden
       codeTextField.text = store.code
-      loginButton.isEnabled = store.isLoginButtonEnabled
+      //loginButton.isEnabled = store.isLoginButtonEnabled
 
       if let store = store.scope(state: \.alert, action: \.alert),
         alertController == nil