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>

src/lang/en.rs

@@ -229,5 +229,7 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("floating_window_tip", "It helps to keep RustDesk background service"),
         ("enable-bot-tip", "If you enable this feature, you can receive the 2FA code from your bot. It can also function as a connection notification."),
         ("enable-bot-desc", "1, Open a chat with @BotFather.\n2, Send the command \"/newbot\". You will receive a token after completing this step.\n3, Start a chat with your newly created bot. Send a message beginning with a forward slash (\"/\") like \"/hello\" to activate it.\n"),
+        ("cancel-2fa-confirm-tip", "Are you sure you want to cancel 2FA?"),
+        ("cancel-bot-confirm-tip", "Are you sure you want to cancel Telegram bot?"),
     ].iter().cloned().collect();
 }