ToolTip throws when TextElement is removed from view

[FrayxRulez]

Describe the bug

ToolTip throws an unhandled NotSupportedException when opening (or closing) for a TextElement that's no longer owned by any (Rich)TextBlock.
This happens because to position itself and to check for safe area, ToolTip calls CCoreServices::GetTextElementBoundingRect that finally leads to CTextElement::GetTextPointer, that returns E_NOT_SUPPORTED whenever it fails to retrieve its parent.

This is quite easy to trigger in scenarios where the same RichTextBlock is being recycled and its Blocks are populated from code behind (ie within a ListView.ItemTemplate)

The workaround is to keep track of all the visible hyperlinks and to manually set their tooltip to null before cleaning the RichTextBlock blocks.

Steps to reproduce the bug

Minimal repro, run, move the cursor to "Here", wait for the tooltip to appear, click the link.
When moving the mouse, the app will crash.

<RichTextBlock x:Name="Block"/>

public MainPage()
{
    InitializeComponent();
    Populate();
}

private void Populate()
{
    var hyperlink = new Hyperlink();
    hyperlink.Inlines.Add(new Run
    {
        Text = "Here"
    };
    
    hyperlink.Click += (s, args) => Populate();
    
    ToolTipService.SetToolTip(hyperlink. "ToolTip");
    
    var paragraph = new Paragraph();
    paragraph.Inlines.Add(hyperlink);
    
    Block.Blocks.Clear();
    Block.Blocks.Add(paragraph);
}

Expected behavior

No response

Screenshots

No response

NuGet package version

WinUI 3 - Windows App SDK 1.4.4: 1.4.231219000

Windows version

No response

Additional context

No response

[FrayxRulez]

Note that marking the unhandled exception as handled (from Application.UnhandledException) leads in the exception being thrown over and over again until the process is finally terminated.
Something that seems to work tho is to retrieve the open popups in the handler by using VisualTreeHelper and to then manually set IsOpen = false for the ToolTip contained in the Popup from the collection.