refactor: Updated Toast story

[brianacnguyen]

Description

• Updated Toast story to new format

Screenshots/Recordings

Pre-merge author checklist

• I’ve followed MetaMask Coding Standards.
• I've clearly explained what problem this PR is solving and how it is solved.
• I've linked related issues
• I've included manual testing steps
• I've included screenshots/recordings if applicable
• 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.
• I’ve properly set the pull request status:
  • In case it's not yet "ready for review", I've set it to "draft".
  • In case it's "ready for review", I've changed it from "draft" to "non-draft".

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.

[github-actions]

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[codecov-commenter]

Codecov Report

Attention: 15 lines in your changes are missing coverage. Please review.

Comparison is base (eeb99d8) 35.17% compared to head (3cfa40d) 35.16%.

Files	Patch %	Lines
...mponent-library/components/Toast/Toast.stories.tsx	0.00%	15 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7860      +/-   ##
==========================================
- Coverage   35.17%   35.16%   -0.01%     
==========================================
  Files        1039     1039              
  Lines       27614    27619       +5     
  Branches     2340     2341       +1     
==========================================
  Hits         9712     9712              
- Misses      17377    17382       +5     
  Partials      525      525              

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[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

1 Bug
0 Vulnerabilities
0 Security Hotspots
1 Code Smell

0.0% Coverage
0.0% Duplication