Fix Year Field in Credit Card form in Safari

[andrewjcasal]

Refers to #9974.
In Safari, year field prefix "20" was showing up lower and darker than suffix "18" (etc.).

Description

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

[Safari] - Fix

[Chrome] - Fix does not effect Chrome

[Safari] - Corrections don't goof other inputs

[Chrome] - Corrections don't goof other inputs

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

[sinan]

👍