SettingsCard ControlTemplate is also applied to Header, HeaderIcon and Description

[AndrewKeepCoding]

Describe the bug

This code:

<!--  Without ContentTemplate  -->
<toolkit:SettingsCard
    Content="CONTENT"
    Description="DESCRIPTION"
    Header="HEADER"
    HeaderIcon="{ui:FontIcon Glyph=&#xE91B;}" />
<!--  With ContentTemplate  -->
<toolkit:SettingsCard
    Content="CONTENT"
    Description="DESCRIPTION"
    Header="HEADER"
    HeaderIcon="{ui:FontIcon Glyph=&#xE91B;}">
    <toolkit:SettingsCard.ContentTemplate>
        <DataTemplate>
            <Button Content="{Binding}" />
        </DataTemplate>
    </toolkit:SettingsCard.ContentTemplate>
</toolkit:SettingsCard>

will render:

Steps to reproduce

Use the code above.

Expected behavior

ContentTemplate is applied only to the Content.

Screenshots

No response

Code Platform

• [ ] UWP
• [x] WinAppSDK / WinUI 3
• [ ] Web Assembly (WASM)
• [ ] Android
• [ ] iOS
• [ ] MacOS
• [ ] Linux / GTK

Windows Build Number

• [ ] Windows 10 1809 (Build 17763)
• [ ] Windows 10 1903 (Build 18362)
• [ ] Windows 10 1909 (Build 18363)
• [ ] Windows 10 2004 (Build 19041)
• [ ] Windows 10 20H2 (Build 19042)
• [ ] Windows 10 21H1 (Build 19043)
• [ ] Windows 10 21H2 (Build 19044)
• [ ] Windows 10 22H2 (Build 19045)
• [ ] Windows 11 21H2 (Build 22000)
• [ ] Other (specify)

Other Windows Build number

No response

App minimum and target SDK version

• [x] Windows 10, version 1809 (Build 17763)
• [ ] Windows 10, version 1903 (Build 18362)
• [ ] Windows 10, version 1909 (Build 18363)
• [ ] Windows 10, version 2004 (Build 19041)
• [ ] Windows 10, version 2104 (Build 20348)
• [ ] Windows 11, version 22H2 (Build 22000)
• [ ] Other (specify)

Other SDK version

No response

Visual Studio Version

Preview

Visual Studio Build Number

Version 17.13.0 Preview 2.1

Device form factor

Desktop

Additional context

The following is mentioned on the ControlPresenter's doc:

If the ContentPresenter is in the ControlTemplate of a ContentControl, the ContentPresenter behavior will implicitly bind to the ContentTemplate and Content properties of the templated ContentControl.

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