ADAPT-2892 Resolve button transition flash

[rebeccahongsf]

READY FOR REVIEW

Summary

• Create decorator class to resolve button transition flash for gradients.

Review By (Date)

• June 25

Review Tasks

Setup tasks and/or behavior to test

1. Check out this branch
2. Run your local and checkout buttons at /test-items/rebecca/button-color-test

Front End Validation

• Is the markup using the appropriate semantic tags and passes HTML validation?
• Cross-browser testing has been performed?
• Automated accessibility scans performed?
• Manual accessibility tests performed?
• Design is approved by @ user?

Backend / Functional Validation

Code

• Are the naming conventions following our standards?
• Does the code have sufficient inline comments?
• Is there anything in this code that would be hidden or hard to discover through the UI?
• Are there any code smells?
• Are tests provided? eg (unit, behat, or codeception)

Code security

• Are all forms properly sanitized?
• Any obvious security flaws or new areas for attack?

General

• Is there anything included in this PR that is not related to the problem it is trying to solve?
• Is the approach to the problem appropriate?

Affected Projects or Products

• Does this PR impact any particular projects, products, or modules?

Associated Issues and/or People

• ADAPT-2892

[yvonnetangsu]

GTG - thank you! 😄