Slash height to match Letters height

Hi.
Sample modified font: https://cuddly.ir/font/RedHatSlashFix.woff2

<img width="989" height="65" alt="Image" src="https://github.com/user-attachments/assets/5b692c72-f2f4-40c4-988f-d2d1fd17be4e" />

<img width="971" height="89" alt="Image" src="https://github.com/user-attachments/assets/49dcb613-36f8-4265-b01f-423c7907c25e" />