If you are required to issue a 1099-NEC (or 1099-MISC), then you do so based on the information the vendor provided you on the W-9. If they did not send you an updated W-9 prior to the end of the tax year, you are not obligated to issued a corrected one. But you must certainly can if you want, "after" the vendor provides you an updated W-9.
If the vendor is a sole proprietorship or single member LLC, it won't really matter tax-wise for the vendor weather you do or not. However, if they're filing as a corporation then it "may" or "may not" matter.
Personally, I'd issue a corrected 1099 once they have provided me an updated W-9. Now for this one specific situation, if any penalties are assessed on me by the IRS for this, I'd let the vendor know I'm passing that cost on to them.
