I agree, I would not expect a corrected 1099-R. The 1099 has to show what actually happened in 2024, which is that you were paid (for example) $10,000 instead of $5000. But there should be no problem telling Turbotax that $5000 was your RMD and the other $5000 was rolled over. (It doesn't matter if it was put back into the existing IRA or rolled over into a new account, it still counts as a rollover, as long as it happened within 60 days of the withdrawal.)
And, BTW, if the mistake was discovered AFTER 60 days, a rollover is generally not allowed. To do a rollover after the deadline, you have to file a letter with the IRA trustee that you self-certify that you qualify for an exception, and keep a copy of the letter with your other tax papers in case you are audited (there is a model letter on the IRS web site).
