with code 8 Turbotax probably reported the 1099-R correctly on line 1. here's from 1040 instructions for line 1 from 2021
• Corrective distributions from a retirement plan shown on Form 1099-R of excess elective deferrals and excess contributions (plus earnings). But don’t include distributions from an IRA* on line 1.
do nothing. if you filed timely, you would have probably heard from the IRS by now if there was an issue
