"I have a client who had tax deducted"

The change is for Exclusion, not Tax deduction.

And it doesn't change all of the computations.

https://proconnect.intuit.com/community/proseries-tax-discussions/discussion/re-another-new-unemploy...

If you intend to file it "incorrectly" then do not deduct that amount. File it "as is" and let the IRS fix it.