TabItem custom header foreground color does not change dynamically

[CodingOctocat]

Describe the bug

TabItem custom header foreground does not change dynamically.

Steps to reproduce the bug

<TabControl Style="{StaticResource TabControlCapsuleSolid}">
    <TabItem>
        <TabItem.Header>
            <TextBlock Text="MyHeader" />
        </TabItem.Header>
    </TabItem>
</TabControl>

Expected behavior

The effect should be equivalent to this:

<TabControl Header="MyHeader"
    Style="{StaticResource TabControlCapsuleSolid}">

</TabControl>

Screenshots

The foreground color of the selected header should be white:

NuGet package version

HandyControls (Custom version) 3.4.0

IDE

Visual Studio 2022

Framework type

.Net 6.0

Windows version

Windows 11 (22000)

Additional context

No response