remove special treatment when only use permanent passwrod but no password set (#8566)

1. Remove special treatment when only use permanent passwrod  but no password set, it has  no need and `Connection not allowd` prompt make user confusing.
2. When only use permanent password is chosen and the permanent password
   is empty, pop up the set-password dialog, if still not set in the
   dialog, back to the old choice
3. Add cancel confirm for 2fa and telegram bot

Signed-off-by: 21pages <sunboeasy@gmail.com>

flutter/lib/desktop/pages/desktop_home_page.dart

@@ -838,7 +838,7 @@ class _DesktopHomePageState extends State<DesktopHomePage>
   }
 }
 
-void setPasswordDialog() async {
+void setPasswordDialog({VoidCallback? notEmptyCallback}) async {
   final pw = await bind.mainGetPermanentPassword();
   final p0 = TextEditingController(text: pw);
   final p1 = TextEditingController(text: pw);
@@ -878,6 +878,9 @@ void setPasswordDialog() async {
         return;
       }
       bind.mainSetPermanentPassword(password: pass);
+      if (pass.isNotEmpty) {
+        notEmptyCallback?.call();
+      }
       close();
     }