Update remaining strings for FTUE.

Include homeserver in view models/state as needed.
Pre-fill the user's display name as set by the server.

RiotSwiftUI/Modules/Authentication/ServerSelection/View/AuthenticationServerSelectionScreen.swift

@@ -62,15 +62,17 @@ struct AuthenticationServerSelectionScreen: View {
             OnboardingIconImage(image: Asset.Images.authenticationServerSelectionIcon)
                 .padding(.bottom, 8)
             
-            Text(VectorL10n.authenticationServerSelectionTitle)
+            Text(viewModel.viewState.headerTitle)
                 .font(theme.fonts.title2B)
                 .multilineTextAlignment(.center)
                 .foregroundColor(theme.colors.primaryContent)
+                .accessibilityIdentifier("headerTitle")
             
-            Text(VectorL10n.authenticationServerSelectionMessage)
+            Text(viewModel.viewState.headerMessage)
                 .font(theme.fonts.body)
                 .multilineTextAlignment(.center)
                 .foregroundColor(theme.colors.secondaryContent)
+                .accessibilityIdentifier("headerMessage")
         }
     }
     
@@ -85,11 +87,13 @@ struct AuthenticationServerSelectionScreen: View {
                     textField
                 }
                 
-                Text(viewModel.viewState.footerMessage)
-                    .font(theme.fonts.footnote)
-                    .foregroundColor(textFieldFooterColor)
-                    .frame(maxWidth: .infinity, alignment: .leading)
-                    .accessibilityIdentifier("textFieldFooter")
+                if let errorMessage = viewModel.viewState.footerErrorMessage {
+                    Text(errorMessage)
+                        .font(theme.fonts.footnote)
+                        .foregroundColor(textFieldFooterColor)
+                        .frame(maxWidth: .infinity, alignment: .leading)
+                        .accessibilityIdentifier("textFieldFooter")
+                }
             }
             
             Button(action: submit) {