fix(x-ui.sh): preserve 2FA on credential reset (#4758)

Go's flag package parses '-resetTwoFactor false' as '-resetTwoFactor=true' with a dangling positional 'false', so two-factor auth was always wiped on username/password reset regardless of the prompt answer. Omit the flag in the preserve branch (default is false) and use '-resetTwoFactor=true' in the disable branch.

x-ui.sh

@@ -244,9 +244,9 @@ reset_user() {
 
     read -rp "Do you want to disable currently configured two-factor authentication? (y/n): " twoFactorConfirm
     if [[ $twoFactorConfirm != "y" && $twoFactorConfirm != "Y" ]]; then
-        ${xui_folder}/x-ui setting -username "${config_account}" -password "${config_password}" -resetTwoFactor false > /dev/null 2>&1
+        ${xui_folder}/x-ui setting -username "${config_account}" -password "${config_password}" > /dev/null 2>&1
     else
-        ${xui_folder}/x-ui setting -username "${config_account}" -password "${config_password}" -resetTwoFactor true > /dev/null 2>&1
+        ${xui_folder}/x-ui setting -username "${config_account}" -password "${config_password}" -resetTwoFactor=true > /dev/null 2>&1
         echo -e "Two factor authentication has been disabled."
     fi