[DataGrid] Remove legacy editing API

[m4theushw]

Closes #5606

Preview: https://deploy-preview-6016--material-ui-x.netlify.app/x/react-data-grid/

Breaking change

• [DataGrid] Remove legacy editing API

  The editing API that is enabled by default was replaced with a new API that contains better support for server-side persistence, validation and customization. This new editing feature was already available in v5 under the newEditingApi experimental flag. In v6, this flag can be removed.

   <DataGrid
  -  experimentalFeatures={{ newEditingApi: true }}
   />

  For users that didn't migrate to the new editing API in v5, additional work may be needed because the new API is not equivalent to the legacy API. Although, some migration steps are available to help in this task.

  • The editCellPropsChange event was removed. If you still need it please file a new issue so we can propose an alternative.
  • The cellEditCommit event was removed and the processRowUpdate prop can be used in place. More information, check the docs section about the topic.
  • The editRowsModel and onEditRowsModelChange props were removed. The cellModesModel or rowModesModel props can be used to achieve the same goal.
  • The following API methods were removed:
    • Use apiRef.current.stopCellEditMode to replace apiRef.current.commitCellChange
    • Use apiRef.current.startCellEditMode to replace apiRef.current.setCellMode(id, field, 'edit')
    • Use apiRef.current.stopRowEditMode to replace apiRef.current.commitRowChange
    • Use apiRef.current.startRowMode to replace apiRef.current.setRowMode(id, 'edit')
    • Use the cellModesModel or rowModesModel props to replace apiRef.current.setEditRowsModel

[mui-bot]

These are the results for the performance tests:

Test case	Unit	Min	Max	Median	Mean	σ
Filter 100k rows	ms	497.1	800.8	687	650.78	116.418
Sort 100k rows	ms	567.6	1,065.3	875.3	856.04	160.754
Select 100k rows	ms	211.8	287.4	273.8	264.38	27.987
Deselect 100k rows	ms	124.8	214.3	200.6	180.44	34.366

Generated by 🚫 dangerJS against df0ce38

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[DanailH]

@m4theushw I guess this solves that issue #5606

The question is does it also save the rest that is listed under the "Editing" section here #3287