feat(overlay): apply data-* header for the error desc (#4015)
Partially resolves WEB-671.
There are some test cases use `data-nextjs-dialog-header` to lookup its
inner text to verify error output. Due to differences of error overlay
layout between turbopack / next-dev, those 2 have different inner texts.
PR applies a workaround, by introducing new data tag
`data-nextjs-turbo-dialog-body`. Next.js upstream will need following
update to utilize this tag in its test suites.
