[data grid] onBeforeClipboardPasteStart and processRowUpdate are not working well with pinned rows

[MT0609]

Steps to reproduce

Steps:

1. Implement the controlling pinned rows (https://v7.mui.com/x/react-data-grid/row-pinning/#controlling-pinned-rows)
2. Implement Clipboard paste with confirmation (https://v7.mui.com/x/react-data-grid/clipboard/#events)
3. Try pasting content of a cell of unpinned row (or any text) into a cell of pinned row (and with or without confirmation popup), the pasting is not working well for pinned row. Try debugging in processRowUpdate function, the row params are not correct

Current behavior

The pinned row that is targeted to be pasted in is not pasted with content after confirmation finishes.

Expected behavior

The pasting should work properly for pinned row with pasting confirmation

Context

No response

Your environment

npx @mui/envinfo

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  Output from `npx @mui/envinfo` goes here.

Search keywords: pinned, clipboard, onBeforeClipboardPasteStart, processRowUpdate

[MBilalShafi]

Pinned rows currently do not support clipboard paste: https://stackblitz.com/edit/bq23bhew

I'll convert this issue to a feature request adding a waiting for 👍 label to gauge community demand for this.

Feel free to drop a 👍 on the issue description.