[regression/8.0.0-preview.7.8842] VisualState does not return to Normal state when using an AppThemeBinding

[daltzctr]

Description

Utilizing a VisualState that defines an AppThemeBinding in PointerOver never returns to Normal state.

Steps to Reproduce

Given

            <Grid WidthRequest="500" ColumnDefinitions="*">
                <VisualStateManager.VisualStateGroups>
                    <VisualStateGroupList>
                        <VisualStateGroup x:Name="CommonStates">
                            <VisualState x:Name="PointerOver">
                                <VisualState.Setters>
                                    <Setter Property="BackgroundColor" Value="{AppThemeBinding Dark=Red, Light=White}"/>
                                </VisualState.Setters>
                            </VisualState>
                            <VisualState x:Name="Normal">
                                <VisualState.Setters>
                                    <Setter Property="BackgroundColor" Value="Transparent" />
                                </VisualState.Setters>
                            </VisualState>
                        </VisualStateGroup>
                    </VisualStateGroupList>
                </VisualStateManager.VisualStateGroups>
                <Label Text="I'm a grid. Hover over me to change background color"/>
            </Grid>

Observe the following.

1. Hover over the grid. Observe the color change to RED.
2. No longer hover over the grid. The color still stays RED.

This does not occur if you remove the AppThemeBinding binding and just use RED.

Link to public reproduction project repository

https://github.com/daltzctr/maui-hoverstate-repro

Version with bug

8.0.0-preview.7.8842

Is this a regression from previous behavior?

Yes, this used to work in .NET MAUI

Last version that worked well

8.0.0-preview.6.8686

Affected platforms

Windows

Affected platform versions

No response

Did you find any workaround?

Don't use AppThemeBinding. Unfortunately, for applications that support more than one theme (dark and white), this is not an acceptable solution.

Relevant log output

No response

[samhouts]

very similar to #16960, but that first appeared in preview2

[samhouts]

Confirmed that this regressed between 8.0.0-preview.6.8686 and 8.0.0-preview.7.8842. #13818 seems sus.

[XamlTest]

Verified this on Visual Studio Enterprise 17.8.0 Preview 1.0. Repro on Windows 11(8.0.0-preview.7.8842) with below Project:
maui-hoverstate-repro.zip

[StephaneDelcroix]

similar, but different, to #16538. Fixed by the same changes