Do not signout user on API failure (duckduckgo#2698)

Task/Issue URL: https://app.asana.com/0/414235014887631/1207023339673018/f

Description:

Do not signOut user on Backend Failure

Author: afterxleep

DuckDuckGo/SettingsViewModel.swift

@@ -430,9 +430,6 @@ extension SettingsViewModel {
             // Account is active but there's not a valid subscription / entitlements
             if await PurchaseManager.hasActiveSubscription() {
                 state.subscription.isSubscriptionPendingActivation = true
-            } else {
-                // Sign out in case access token is present but no subscription and there is no active transaction on Apple ID
-                signOutUser()
             }
         }
 

DuckDuckGo/Subscription/ViewModel/SubscriptionSettingsViewModel.swift

@@ -84,11 +84,9 @@ final class SubscriptionSettingsViewModel: ObservableObject {
                                                 date: subscription.expiresOrRenewsAt,
                                                 product: subscription.productId,
                                                 billingPeriod: subscription.billingPeriod)
-            case .failure:
-                AccountManager().signOut()
-                DispatchQueue.main.async {
-                    self.state.shouldDismissView = true
-                }
+            default:
+                return
+                
             }
         }
     }