fix: [Select All not selecting newly added rows when using ItemProvider] in [FluentDataGrid]

[cdaSHD]

🐛 Bug Report

I am using a FluentDataGrid with an ItemProvider in virtual mode and most of the time things are okay (apart from some wacky over-scrolling sometimes but that is another issue for another day!). However when we insert a new row into the data grid the SelectAll function from the SelectColumn ignores the newly added row.
Please find example project below:

SelectionIssue.zip

1. Open and run the project attached
2. Go to the DB page and press the new button
3. Click the select all checkbox

🤔 Expected Behavior

The newly added row should also be selected.

😯 Current Behavior

The newly added row is not selected.

🌍 Your Environment

• OS & Device: Windows 11
• Browser: Chrome
• .NET and Fluent UI Blazor library Version: .Net 9.0 and Fluent UI 4.12.1