Screen reader support for header week numbers breaks jest-axe tests

[SheaClose]

Describe the bug
The accessibility improvements added in #5731 is triggering a failure in jest-axe when using renderCustomHeader due to missing role="row"

To Reproduce
Steps to reproduce the behavior:

1. Consume Datepicker component, providing a renderCustomHeader arg.
2. run jest-axe test against component.

Expected behavior
Should pass accessibilty testing when using renderCustomHeader

Screenshots

Desktop (please complete the following information):

• OS: macOS Sonoma 14.6.1
• Browser n/a
• Version 8.5.0

[martijnrusschen]

Can you check out #5808 to see if this fixes it?

[SheaClose]

This does appear to have resolved the issue!

[martijnrusschen]

I've merged the fix including additional jest-axe testing in this repo so we can hopefully catch these before we release them next time.