中间件下拉列表bug

直接选择custom、是没SpringWebFlux

<img width="815" height="438" alt="Image" src="https://github.com/user-attachments/assets/56b3daef-9c15-48bd-beb0-7959ba89882a" />

先点哥斯拉，选择SpringWebFlux，然后再点custom，就能调用SpringWebFlux了

<img width="867" height="592" alt="Image" src="https://github.com/user-attachments/assets/3975a0de-7007-443b-9a02-b4bae5bec45c" />

