[docs][data grid] Fix page change speed regression

[oliviertassinari]

Steps to reproduce

Try to move from the data grid edition page https://mui.com/x/react-data-grid/editing/ to the data grid sorting page https://mui.com/x/react-data-grid/sorting/. This has gotten increasingly slower to the point where it feels like I don't want to use the docs:

v5 https://v5.mui.com/x/react-data-grid/editing/. OK, not amazing but usable (2+ years ago)

v6 https://v6.mui.com/x/react-data-grid/editing/, borderline good enough, start to be annoying

v7 - v8 https://next.mui.com/x/react-data-grid/editing. It's so slow, I don't want to use the docs (now)

Context

The root cause could be mui/material-ui#41117, unclear. At first, I though, maybe it's because we render more demos on these pages. But we seem to have kept more or less the same number of demos, 11-13 ish.

Your environment

npx @mui/envinfo

  Don't forget to mention which browser you used.
  Output from `npx @mui/envinfo` goes here.

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[0xenn]

Can I look into this and try working on it.

[0xenn]

@arminmeh Thanks.