chore: Create a story for IconButton component

[devin-ai-integration]

Description

This PR adds a Storybook story for the IconButton component. The story includes default and disabled variants of the IconButton.

Related issues

Manual testing steps

1. Go to the latest build of storybook in this PR
2. Navigate to the IconButton component in the Components/ComponentLibrary/ folder.

Screenshots/Recordings

Pre-merge author checklist

• I've followed MetaMask Coding Standards.
• I've completed the PR template to the best of my ability
• I've included tests if applicable
• I've documented my code using JSDoc format if applicable
• I've applied the right labels on the PR (see labeling guidelines). Not required for external contributors.

Pre-merge reviewer checklist

• I've manually tested the PR (e.g. pull and build branch, run the app, test code being changed).
• I confirm that this PR addresses all acceptance criteria described in the ticket it closes and includes the necessary testing evidence such as recordings and or screenshots.

This Devin run was requested by George.

Tag: team-design-system

[github-actions]

CLA Signature Action: All authors have signed the CLA. You may need to manually re-run the blocking PR check if it doesn't pass in a few minutes.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[georgewrmarshall]

Duplicate #25277