TabView Affects the Behavior of the Title Bar

### Describe the bug

When the **AppWindow.TitleBar.ExtendsContentIntoTitleBar** property in **Window** is set to **true** and the **SetTitleBar()** method is called, a **TabView** with its **Visibility** property set to **Visibility.Collapsed** will affect the title bar, making it undraggable, but the minimize, maximize, and close buttons can still be clicked.

### Why is this important?

When the TabView is set to **Visibility.Collapsed** due to certain needs, it is suddenly discovered that the title bar becomes non-draggable, which negatively affects the user experience.

### Steps to reproduce the bug

In MainWindow.xaml
``
``

In MainWindow.xaml.cs
`AppWindow.TitleBar.ExtendsContentIntoTitleBar = true;`
`SetTitleBar(MainTitleBar);`

The TabView among them can be anywhere, as long as it is set to **Collapsed**.

### Actual behavior

The title bar cannot be dragged, only the minimize, maximize, and close buttons can be clicked, and the position of the toolbar at the top of the window can be seen at the very top.

### Expected behavior

Operating normally, the title bar can be dragged.

### Screenshots

### NuGet package version

Windows App SDK 2.0.1

### Windows version

_No response_

### Additional context

_No response_