Adding x also as close for ligature reasons
**Describe the requested icon(s)**

I wanna note that a bug was closed (#583) because a rename is not within the scope so i thought.

What about adding the icon on both x and close/xx just to support the ligature case, im running into the same issues since im subsetting phoshor icons to minimize what goes over the wire.

**References**

<img width="356" alt="Screenshot 2024-12-13 at 10 59 18" src="https://github.com/user-attachments/assets/89f351a9-cac0-4d0a-a22d-150edfe7d3cc" />
<img width="346" alt="Screenshot 2024-12-13 at 10 59 04" src="https://github.com/user-attachments/assets/9dc34c99-9304-4266-a437-388f0fafce9a" />

**Additional context**

I added this a icon addition because it would just add the x icon again under another name but make it ligature friendly
