Handle cases where Binding markup extension is treated as "regular" property value

[Youssef1313]

This is related to https://github.com/unoplatform/kahua-private/issues/205

Current behavior

<Page x:Class="UnoApp10.MainPage"
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
      xmlns:local="using:UnoApp10"
      Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
  <StackPanel>
    <local:MyCustomPanel x:Name="SUT" MyBinding="{Binding Hello2}"></local:MyCustomPanel>
  </StackPanel>
</Page>

using Microsoft.UI.Xaml.Data;

namespace UnoApp10;

public sealed partial class MainPage : Page
{
    public MainPage()
    {
        this.InitializeComponent();
    }
}

public partial class MyCustomPanel : Panel
{
    private BindingBase _myBinding;

    public BindingBase MyBinding { get => _myBinding; set => _myBinding = value; /* add breakpoint here */ }
}

On WinUI, this should set the binding as "regular" property, which is not the case in Uno.

IMPORTANT NOTES:

1. If the MyBinding property was a DP, then the binding markup extension will be treated regularly as a binding, not property value.
2. MyBinding being a DP is not simply that there is a static MyBindingProperty, the registration name must match the C# property name. So, something like DependencyProperty.Register("_MyBinding", ...) will not consider MyBinding as a DP, hence it will be regular property value.

Expected behavior

Match WinUI

How to reproduce it (as minimally and precisely as possible)

No response

Workaround

No response

Works on UWP/WinUI

None

Environment

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NuGet package version(s)

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Affected platforms

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IDE

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IDE version

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Relevant plugins

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Anything else we need to know?

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