Revise active sector lines: EKCH

Remove the thick line between EKCHFIN22 / EKCHAPPE and EKCH AREA-22 when all ESMM / EKCH combinations online with runway 22 active.

<img width="512" height="434" alt="Image" src="https://github.com/user-attachments/assets/dab398ec-8aa1-448b-92c0-85c5efd4ac84" />