get anonymousId from continueUrl

Author: russellwheatley

FirebaseSwiftUI/FirebaseAuthSwiftUI/Sources/Services/AuthService.swift

@@ -307,7 +307,8 @@ public extension AuthService {
       let link = url.absoluteString
 
       if auth.isSignIn(withEmailLink: link) {
-        let anonymousUserID = CommonUtils.getQueryParamValue(from: link, paramName: "ui_auid")
+        let anonymousUserID = CommonUtils.getQueryParamValue(from: link, paramName: "continueUrl")
+          .flatMap { CommonUtils.getQueryParamValue(from: $0, paramName: "ui_auid") }
         if shouldHandleAnonymousUpgrade, anonymousUserID == currentUser?.uid {
           let credential = EmailAuthProvider.credential(withEmail: email, link: link)
           try await handleAutoUpgradeAnonymousUser(credentials: credential)

FirebaseSwiftUI/FirebaseAuthSwiftUI/Sources/Views/EmailAuthView.swift

@@ -125,7 +125,7 @@ extension EmailAuthView: View {
       .frame(maxWidth: .infinity)
       .buttonStyle(.borderedProminent)
       Button(action: {
-        authService.authView = .passwordRecovery
+        authService.authView = .emailLink
       }) {
         Text("Prefer Email link sign-in?")
       }