[HOLD for payment 2024-11-29] [Company Cards] Update the Amex cards format

[mountiny]

Coming from here

Lets update the Amex cards format to show as 4 digits, 6 digits, 5 digits because they are 15 digits number. This ensure they will look nice in the product.

Issue Owner

Current Issue Owner: @zanyrenney

[melvin-bot]

Triggered auto assignment to @zanyrenney (Bug), see https://stackoverflow.com/c/expensify/questions/14418 for more details. Please add this bug to a GH project, as outlined in the SO.

[VickyStash]

Hi, I'm Viktoryia from Callstack - expert contributor group - and I would like to work on this issue.

[DylanDylann]

@mountiny I can help on this issue

[VickyStash]

Updates:

• Implemented updates and opened the Draft PR.

TODOs:

• Add screenshots for mobile platforms
• Add unit tests for maskCardNumber function.

I think the PR will be ready for the review tomorrow in the first part of the day.