When I print to pdf "all turbotax forms and worksheets" for my 2021 federal tax return, a turbotax worksheet "Form 8582 Modified Adjusted Gross Income Worksheet" (this is not IRS form 8582) appears as page 199 of 308 (your page count will differ). But if your pdf reader has a search feature, just search on the word "modified" and it will eventually come to that worksheet if it exists.
It appears to be a worksheet that is not filed with the tax return, but is just an internal worksheet prepared by the software for the taxpayers records.
HOWEVER, the amount on my worksheet does not include any social security retirement income, taxable or non-taxable, which is odd. It also doesn't match the MAGI amount that turbotax populates into line 1 of the "Roth IRA Contribution Limit Worksheet". That $value is significantly less that what is at the bottom of form 8582.
