[mobile] Update passkeys URLs (#2101)

We now explicitly pass a recover URL to the accounts app, and I've added
some placeholder values. This URL will be opened when the user selects
the "Recover passkey" option on the authentication failure screen.

auth/lib/services/passkey_service.dart

@@ -42,7 +42,7 @@ class PasskeyService {
   Future<void> openPasskeyPage(BuildContext context) async {
     try {
       final jwtToken = await getJwtToken();
-      final url = "https://accounts.ente.io/passkeys/handoff?token=$jwtToken";
+      final url = "https://accounts.ente.io/passkeys?token=$jwtToken";
       await launchUrlString(
         url,
         mode: LaunchMode.externalApplication,

auth/lib/ui/passkey_page.dart

@@ -44,6 +44,7 @@ class _PasskeyPageState extends State<PasskeyPage> {
       "https://accounts.ente.io/passkeys/verify?"
       "passkeySessionID=${widget.sessionID}"
       "&redirect=enteauth://passkey"
+      "&recover=enteauth://passkey/recover"
       "&clientPackage=io.ente.auth",
       mode: LaunchMode.externalApplication,
     );

mobile/lib/services/passkey_service.dart

@@ -42,7 +42,7 @@ class PasskeyService {
   Future<void> openPasskeyPage(BuildContext context) async {
     try {
       final jwtToken = await getJwtToken();
-      final url = "https://accounts.ente.io/passkeys/handoff?token=$jwtToken";
+      final url = "https://accounts.ente.io/passkeys?token=$jwtToken";
       await launchUrlString(
         url,
         mode: LaunchMode.externalApplication,

mobile/lib/ui/account/passkey_page.dart

@@ -44,6 +44,7 @@ class _PasskeyPageState extends State<PasskeyPage> {
       "https://accounts.ente.io/passkeys/verify?"
       "passkeySessionID=${widget.sessionID}"
       "&redirect=ente://passkey"
+      "&recover=ente://passkey/recover"
       "&clientPackage=io.ente.photos",
       mode: LaunchMode.externalApplication,
     );