WinForms TabControl does not expose TabItem controls to UIAutomation
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- C#
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Description
### .NET version
.NET 8
### Did it work in .NET Framework?
Yes
### Did it work in any of the earlier releases of .NET Core or .NET 5+?
Yes, I believe it was working in .NET 6.
### Issue description
For a WinForms TabControl, the tab page is exposed through UIAutomation but the TabItem controls are missing so there is no way for automations to switch between tabs.
### Steps to reproduce
Create a WinForms app. Add a TabControl. By default it will have to pages. Run it. Walk the tree of the application. Tab page is there but no TabItem controls.
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