Fix linux zeta modifiers display (#24764)

Improves rendering of Zeta keybind shortcuts on Linux

Before:

![image](https://github.com/user-attachments/assets/9b6a61f7-dade-480f-a864-acdcede05957)

After: (with muting modifier changes merged)

![image](https://github.com/user-attachments/assets/dd616d29-ac2e-4c8b-bf9b-5d74f8e4f1c4)


Release Notes:

- N/A

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Co-authored-by: Michael <michael@zed.dev>
Co-authored-by: Agus <agus@zed.dev>