chore: Create a story for AnimatedTransactionModal component

[devin-ai-integration[bot]]

Description

This pull request adds a Storybook story for the AnimatedTransactionModal component. The story includes a default setup with mock implementations for the review and onModeChange functions, and a ready prop set to true. The story also includes a child component to demonstrate the component's usage.

Related issues

N/A

Manual testing steps

1. Go to the latest build of Storybook in this PR.
2. Navigate to the AnimatedTransactionModal component in the UI folder.

Screenshots/Recordings

N/A

Pre-merge author checklist

• [X] I’ve followed MetaMask Coding Standards.
• [X] I've completed the PR template to the best of my ability.
• [X] I’ve included tests if applicable.
• [X] I’ve documented my code using JSDoc format if applicable.
• [X] 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 Devin.