[data grid] Row reorder in tree-grid after edit

[codescale]

Steps to reproduce 🕹

Just take the current example from https://mui.com/x/react-data-grid/tree-data/#custom-grouping-column and change the name col to be editable (editable: true,).... it uses version 6.0.1

Current behavior 😯

Expected behavior 🤔

I would expect that the row order does not change ... as it's the case with version 5.17.26

Context 🔦

No response

Your environment 🌎

No response

Order ID or Support key 💳 (optional)

No response

[m4theushw]

This bug is happening because in

mui-x/packages/grid/x-data-grid-pro/src/utils/tree/updateRowTree.ts

Lines 62 to 63 in e295f3c

	const pathInPreviousTree = getNodePathInTree({ tree, id });
	const isInSameGroup = isDeepEqual(pathInPreviousTree, path);

we're comparing null (new path) with undefined (previous path). The following diff seems to fix the issue:

diff --git a/packages/grid/x-data-grid-pro/src/hooks/features/treeData/useGridTreeDataPreProcessors.tsx b/packages/grid/x-data-grid-pro/src/hooks/features/treeData/useGridTreeDataPreProcessors.tsx
index a5dae4f6f..d8ced0478 100644
--- a/packages/grid/x-data-grid-pro/src/hooks/features/treeData/useGridTreeDataPreProcessors.tsx
+++ b/packages/grid/x-data-grid-pro/src/hooks/features/treeData/useGridTreeDataPreProcessors.tsx
@@ -133,7 +133,7 @@ export const useGridTreeDataPreProcessors = (
       const getRowTreeBuilderNode = (rowId: GridRowId) => ({
         id: rowId,
         path: props.getTreeDataPath!(params.dataRowIdToModelLookup[rowId]).map(
-          (key): RowTreeBuilderGroupingCriterion => ({ key, field: null }),
+          (key): RowTreeBuilderGroupingCriterion => ({ key, field: undefined }),
         ),
       });

[yashwant-raut]

@m4theushw any update on whether this issue is resolved? any roadmap? this is the only issue stopping us from buying this Fantastic library and use in our application. It will be great if you can tell me what is a tentative timeline for this issue.
Thank You.

[jen-codingscape]

Any update on this issue?