Fix Dark Mode Bug

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Describe the bug
A clear and concise description of what the bug is.
When the QuickLook app is running, as we all know, if we click this app again in Start Menu, a windows will appear to remind us that this app is running. But recently, I found this window's style doesn't follow system's dark/light mode. It always stays in light mode.
To Reproduce
Steps to reproduce the behavior:

1. Go to 'Start Menu'
2. Click on 'QuickLook'(make sure this app is running previously)
3. When the windows appears, we could see error.

Expected behavior
A clear and concise description of what you expected to happen.
The window should follow system's dark/light mode to change its own style.
Desktop (please complete the following information):

• OS Version: Windows 11 25H2
• QuickLook Version: 4.5.5.0 from Microsoft Store

Screenshots and Exception Log
If applicable, add screenshots and logs to help explain your problem. The log file is located in one of several locations.

Reproduce the issue by running QuickLook, opening it again from the Start Menu, and switching between Windows light and dark modes. No source file or test is named; trace the window shown by this entry point and verify that it follows the system theme in both modes.