CmdPal: Ensure IconBox uses an initialized scale (#45980)

## Summary of the Pull Request

This PR makes sure that IconBox is using valid scale to prevent
defaulting to 0 and using poorly resizes full-scale image:

<img width="81" height="79" alt="image"
src="https://github.com/user-attachments/assets/55bbb08f-6f78-4c19-b7a6-748176dee9c8"
/>
vs 
<img width="89" height="88" alt="image"
src="https://github.com/user-attachments/assets/2dc26863-88c0-4c47-8798-023611d571b5"
/>


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## PR Checklist

- [x] Closes: #45973