调整国标设备密码逻辑，未设置公共密码则需要提前添加设备后才允许注册

src/main/java/com/genersoft/iot/vmp/VManageBootstrap.java

@@ -14,7 +14,7 @@ import org.springframework.context.ConfigurableApplicationContext;
 import org.springframework.scheduling.annotation.EnableScheduling;
 
 import jakarta.servlet.ServletContext;
-import jakarta.servlet.ServletException;
+import jakarta.servlet.ServletException;    
 import jakarta.servlet.SessionCookieConfig;
 import jakarta.servlet.SessionTrackingMode;
 import java.util.Collections;