Fix the UI tests. (#4085)

* Compile errors 😬

* Update server selection snapshots.

The default footer string has changed.

* Remove the TemplateScreen UI tests.

We use preview tests for snapshots now, UI tests are for flow coordinators.

* Add the same looping on the OIDC UI test (but disable the test in the end).

* Run UI tests separately for iPhone and iPad.

GitHub runners don't seem to have enough memory to handle 2 simulators at once.

ElementX/Sources/UITests/UITestsAppCoordinator.swift

@@ -132,11 +132,6 @@ class MockScreen: Identifiable {
             flowCoordinator.start()
             retainedState.append(flowCoordinator)
             return nil
-        case .templateScreen:
-            let navigationStackCoordinator = NavigationStackCoordinator()
-            let coordinator = TemplateScreenCoordinator(parameters: .init())
-            navigationStackCoordinator.setRootCoordinator(coordinator)
-            return navigationStackCoordinator
         case .appLockFlow, .appLockFlowDisabled:
             // The tested coordinator is setup below in the alternate window.
             // Here we just return a blank screen to snapshot as the unlocked app.

ElementX/Sources/UITests/UITestsScreenIdentifier.swift

@@ -42,7 +42,6 @@ enum UITestsScreenIdentifier: String {
     case sessionVerification
     case startChat
     case startChatWithSearchResults
-    case templateScreen
     case userSessionScreen
     case userSessionScreenReply
     case autoUpdatingTimeline