See: https://github.com/microsoft/microsoft-ui-xaml/releases/tag/v2.5.0-prerelease.200609001
> ### Notable Changes:
>
> Resize tab view items only once the pointer has left the TabViewItem strip (microsoft/microsoft-ui-xaml#2569)
> Align TabView visuals with Edge (microsoft/microsoft-ui-xaml#2201)
> Fix background of MenuFlyout in white high contrast (microsoft/microsoft-ui-xaml#2446)
> TabView: Make TabViewItem consume the TabViewItemHeaderForeground theme resource (microsoft/microsoft-ui-xaml#2348)
> TabView: Add tooltips to its scrolling buttons. (microsoft/microsoft-ui-xaml#2369)
* [x] Related to #5360 (@jtippet confirms that this alone does not close it.)
* [x] I work here
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