Tooltip gets stuck after long press (~3 seconds) on touch screen in WinUI 3

### Describe the bug

When using a touch-enabled device, performing a long press (approximately 3 seconds) on a UI element that has a Tooltip causes the Tooltip to appear but never dismiss afterward.

### Why is this important?

This behavior leads to a poor user experience on touch devices, as the Tooltip blocks UI interaction and cannot be dismissed without additional workarounds.

### Steps to reproduce the bug

1. Create a WinUI 3 application and run on a touch-enabled device.
(already has attached a Tooltip to any interactive element (e.g., Button))
2. Press and hold (long press) on the element for ~3 seconds.
3. Release the touch.

### Actual behavior

The Tooltip appears after the long press but remains stuck on the screen indefinitely. It does not disappear even after releasing the touch.

### Expected behavior

The Tooltip should appear on long press and then automatically dismiss when the touch interaction ends or when focus changes.

### Screenshots

_No response_

### NuGet package version

WinUI 3 - Windows App SDK 1.8.5: 1.8.260209005

### Windows version

Windows 11 (23H2): Build 22631

### Additional context

_No response_

Reproduce the issue in a WinUI 3 application on a touch-enabled Windows 11 device using Windows App SDK 1.8.5, following the long-press steps in the report. Done means the Tooltip appears after a long press and dismisses when the touch ends or focus changes.

Written by the indexing model from the issue text.