fix: icon size in Expandable component

[lawreka]

Summary

expandable component should have a smaller icon, we were failing to override the Icon component with the correct styles

before	after

Test Plan

• update storybook

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Note

Low Risk
Small, localized UI-only change that only affects Expandable’s Icon rendering and should not impact business logic or data flow.

Overview
Fixes the Expandable caret icon rendering by passing overrideColor and overrideSize to Icon, allowing the component’s Tailwind className (e.g., size-2.5 and background classes) to take effect instead of Icon’s default sizing/color behavior.

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