Reset default username and password fields in Login.vue for improved security and user experience

src/views/system/loginmini/Login.vue

@@ -132,8 +132,8 @@ const rememberMe = ref<string>('0');
 //账号登录表单字段
 const formData = reactive<any>({
   inputCode: '',
-  username: 'admin',
-  password: '123456',
+  username: '',
+  password: '',
 });
 const loginRef = ref();
 const loginLoading = ref<boolean>(false);