Skip client-side data-fetching after ssr error (#51377)
Fixes: #47978
When an error occurs in getInitialProps, the error page's
getInitialProps is run server-side and returned in `__NEXT_DATA__`.
Following, there's no need to re-run `getInitialProps` client-side on
the hydrate pass.
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Co-authored-by: JJ Kasper <jj@jjsweb.site>
