Icon Request Zulip

**Tell me things about the app or icon**
1. App name: Zulip
2. App Webside: https://zulip.com/
3. App icon name: zulip (org.zulip.Zulip on flatpak)

**Additional context**
This is what the icon looks like:

<img width="128" height="128" alt="Image" src="https://github.com/user-attachments/assets/812891af-0f99-4f4b-847b-6916a68ac261" />