Components

• [DataGrid] Make Grid in ColumnBase protected (#2342)
• [DataGrid] Several issues addressed (#2347)
• [DatePicker] Add 'PickerMonthChanged' event and 'DaysTemplate' parameter (#2336)
• [Multi Splitter] Fix the Splitter OnMouseMove (#2333)

Demo site and documentation

• [Docs] Fix Tabs Dynamic example (#2341)
• [Docs] Move Date and Autocomplete components to Forms section (#2330)
• [Docs] Update homepage (#2324)
• [Docs] Update the Variant selector in Icon Explorer (#2331)

Full Changelog: https://github.com/microsoft/fluentui-blazor/compare/v4.9.0...v4.9.1