[Due for payment 2025-12-26] [Custom Columns][Release 4] Add taxRate column to Search results

[luacmartins]

1. Add the taxRate column to this array
2. Add the taxRate column to this function, with default to false
3. Add a Text component for the taxRate column here (follow the order here). This column displays taxRateName (taxRate).
4. Add automated tests here

Parent issue: https://github.com/Expensify/Expensify/issues/566674

[PiyushChandra17]

I'd like to work on this if it's open external contributors, the solution is already detailed in OP. Many Thanks!

[JS00001]

This is being worked on this week