docs(ssr): Hydration caveat for Next.js rewrites

[bennettdams]

This adds a small section for a caveat about hydration when using some specific feature/configuration of Next.js.

See initial RQ discussion: #3192

See Next.js issue: vercel/next.js#33028 (comment)

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I'm not sure if we should additionally reference the Next.js issue for this topic in the RQ docs, but my hopes are not high that the issue will be fixed "this time", as it is not really a bug per se, so I didn't here.

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[codecov]

Codecov Report

Merging #3209 (c12f2de) into master (e328ca0) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #3209   +/-   ##
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  Coverage   96.47%   96.47%           
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  Files          45       45           
  Lines        2270     2270           
  Branches      639      639           
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  Hits         2190     2190           
  Misses         77       77           
  Partials        3        3           

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[bennettdams]

Maybe @Ephem has some more insights on this topic, so we could give guidance on how to tackle this in the docs?

[tannerlinsley]

🎉 This PR is included in version 3.34.10 🎉

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• npm package (@latest dist-tag)
• GitHub release

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[tannerlinsley]

🎉 This PR is included in version 4.0.0-alpha.8 🎉

The release is available on:

• npm package (@alpha dist-tag)
• GitHub release

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