[data grid] Wrong position for Checkbox column after unpinning other column

[dashasm]

The problem in depth

Issue Description

The issue arises when grouping is enabled, and at least one column is grouped. If another column is pinned to the left and then unpinned, the Checkbox column does not return to its original position. Instead, it is placed after the grouped column.

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Steps to Reproduce

1. Use the first example from the documentation codesandbox.
2. Add the prop checkboxSelection={true} to the table.
3. For a different column (not the grouped one), select "Pin to left" and then "Unpin".

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Actual Behavior

The Checkbox column does not return to its original position but is placed after the grouped column.

Expected Behavior

The Checkbox column should remain located before the grouped column after unpinning.

Your environment

`npx @mui/envinfo`

"@mui/x-data-grid-premium": "^7.22.2",

Search keywords: DataGrid Pinned Columns Checkbox
Order ID: 82865

[michelengelen]

Confirmed the bug ... i could not find a quick solution to this.
Moving it to the board! 👍🏼