[DataGrid] Change isCellEditable params type

[atomheartother]

Hi MUI-X team, thanks for your hard work.

I believe I have come across an incorrect type for isCellEditable's params, see the diff.

The bug

As the types currently are on master (and in production) , params.row is any, meaning any typo or wrong property on params.row won't be picked up by TS, despite users' efforts to type their grid strongly:

This also means params.value is, I believe, incorrectly typed, making it look like the value has the row's type (which it shouldn't):

The fix

With my fairly simple MR, Typescript understands what's happening and warns the user against potential bug:

That's pretty much it.

[mui-bot]

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[atomheartother]

Your additional fix makes total sense and no apology needed, all the effort is on you guys' side. Thanks for the review!

[github-actions[bot]]

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