Fix Flysky EL18 layout issues

ExpressLRS Bind Tool:

<img width="320" height="480" alt="Image" src="https://github.com/user-attachments/assets/e6d57d5c-9925-4d1f-b628-e687bd7eb342" />

VTX Admin full screen view:

<img width="320" height="480" alt="Image" src="https://github.com/user-attachments/assets/39fb8380-89d0-4631-9417-85c201ac03a9" />