Drop WebUI default credentials

PR #19777.

src/base/utils/password.h

@@ -1,5 +1,6 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2023  Vladimir Golovnev <glassez@yandex.ru>
  * Copyright (C) 2018  Mike Tzou (Chocobo1)
  *
  * This program is free software; you can redistribute it and/or
@@ -37,6 +38,8 @@ namespace Utils::Password
     // Taken from https://crackstation.net/hashing-security.htm
     bool slowEquals(const QByteArray &a, const QByteArray &b);
 
+    QString generate();
+
     namespace PBKDF2
     {
         QByteArray generate(const QString &password);