Improve instrument piemenu UI

[021nirav-blip]

This PR improves the usability of the instrument selector (pie menu) by making it feel less crowded and easier to read.

Changes made:

• Increased the canvas size of the instrument pie menu for better spacing.
• Increased the inner radius of the donut slice to reduce visual clutter and give more breathing room.
• The result is a more natural, balanced, and readable UI for selecting instruments.

This makes the interface feel less claustrophobic, especially for new users and on smaller screens.

Fixes #4578
@walterbender

[github-actions]

❌ Some Jest tests failed. Please check the logs and fix the issues before merging.

Failed Tests:

synthutils.test.js

[zealot-zew]

i think this issue has been fixed by making the pie menu scrollable, check out PR #5122

[021nirav-blip]

Thanks for pointing this out and sharing PR #5122.

I missed that this issue was already addressed there. I’ll close this PR and review the changes in #5122 to better understand the intended solution and design approach.

Really appreciate the guidance.