mui/mui-x v7.0.0-beta.7 on GitHub

We'd like to offer a big thanks to the 11 contributors who made this release possible. Here are some highlights ✨:

🦥 The Lazy loading feature is now stable and the lazyLoading feature flag was removed from the experimentalFeatures prop.
🌍 Improve Japanese (ja-JP) locale for the Data Grid
🐞 Bugfixes
📚 Documentation improvements

The columnHeader--showColumnBorder class was replaced by columnHeader--withLeftBorder and columnHeader--withRightBorder.
The columnHeadersInner, columnHeadersInner--scrollable, and columnHeaderDropZone classes were removed since the inner wrapper was removed in our effort to simplify the DOM structure and improve accessibility.
The pinnedColumnHeaders, pinnedColumnHeaders--left, and pinnedColumnHeaders--right classes were removed along with the element they were applied to.
The pinned column headers now use position: 'sticky' and are rendered in the same row element as the regular column headers.

[DataGrid] Fix focus visible style on scrollbar (#12402) @oliviertassinari
[DataGrid] Fix the issue where pressing the Delete key resets various cell values to an empty string. (#12216) @sooster910
[DataGrid] Make rowCount part of the state (#12381) @MBilalShafi
[DataGrid] Make column resizing and autosizing available in Community plan (#12420) @cherniavskii
[DataGrid] Remove baseSwitch slot (#12439) @romgrk
[l10n] Improve Japanese (ja-JP) locale (#12398) @makoto14

Same changes as in @mui/x-data-grid@7.0.0-beta.7, plus:

[DataGridPro] Add inputRef to the props passed to colDef.renderHeaderFilter (#12328) @vovarudomanenko
[DataGridPro] Fix filler rendered for no reason when there are pinned columns (#12440) @cherniavskii
[DataGridPro] Make lazy loading feature stable (#12421) @cherniavskii
[DataGridPro] Render pinned and non-pinned column headers in one row (#12376) @cherniavskii

Same changes as in @mui/x-data-grid-pro@7.0.0-beta.7, plus:

[DataGridPremium] Fix auto-scroll not working when selecting cell range (#12267) @cherniavskii

[fields] Fix tabIndex on accessible field DOM structure (#12311) @flaviendelangle
[fields] Fix items alignment on multi input range fields (#12312) @flaviendelangle
[pickers] Improve the customization of the range picker calendar header (#11988) @flaviendelangle
[pickers] Keep the existing time when looking for closest enabled date (#12377) @LukasTy

Same changes as in @mui/x-date-pickers@7.0.0-beta.7.

The onNodeFocus callback has been renamed to onItemFocus for consistency:

 <SimpleTreeView
-  onNodeFocus={onNodeFocus}
+  onItemFocus={onItemFocus}
 />

[TreeView] Clean the usage of the term "item" and "node" in API introduced during v7 (#12368) @noraleonte
[TreeView] Introduce a new TreeItem2 component and a new useTreeItem2 hook (#11721) @flaviendelangle
[TreeView] Rename onNodeFocus to onItemFocus (#12419) @noraleonte