Backport documentation fixes for 16.1.x (#90655)
## Summary
Backports documentation fixes and improvements from canary to the
`next-16-1` branch.
### Included commits:
- `757ab17e54` In-Depth Explanation of React Version Handling Doc
(#89426)
- `fe0bb2fc51` Next.js sticky scroll standards (#90197)
- `d13d1ba23b` docs: improve form guide consistency and validation
examples (#90361)
- `c23f3434a3` docs: fixes typo in manifest.mdx regarding Route Handler
note (#90394)
- `dcf11d111b` docs: clarify that next upgrade is for 16.1.x+ (#90435)
- `da0cbcce76` Add not-found.js / notFound() links to Status Codes
section (#88332)
- `ae79ae55eb` docs: add Docker Standalone and Docker Export examples to
Deploying page (#90386)
- `bb813afd49` docs(deploying): add Hostinger Web Apps Hosting to
Node.js deployment options (#90246)
- `15fcfb9ce4` docs: fix navigationType value and variable name in
useReportWebVitals (#90599)
- `080e1b3` docs: Accept header content negotiation (#90607)
---------
Co-authored-by: Abhishek Mardiya <97448460+abhishekmardiya@users.noreply.github.com>
Co-authored-by: vercel[bot] <35613825+vercel[bot]@users.noreply.github.com>
Co-authored-by: Jimmy Lai <laijimmy0@gmail.com>
Co-authored-by: Cursor Agent <cursoragent@cursor.com>
Co-authored-by: Mary Lavanitha <lavanitha.officialdesk@gmail.com>
Co-authored-by: Tyler Arthur <46767044+tdarthur@users.noreply.github.com>
Co-authored-by: Karl Horky <karl.horky@gmail.com>
Co-authored-by: Kristiyan Velkov <40764277+kristiyan-velkov@users.noreply.github.com>
Co-authored-by: Wyatt Johnson <accounts+github@wyattjoh.ca>
Co-authored-by: kristiyan.velkov <kristiyan.velkov@ffw.com>
Co-authored-by: agneliutkiene <agne.liutkiene@hostinger.com>
Co-authored-by: Mimori <mimorimori256@gmail.com>
Co-authored-by: Joseph <icyJoseph@users.noreply.github.com>
