[BUG]: The Power Display popup window is not placed correctly for auto-hide

### Microsoft PowerToys version

0.99.0

### Installation method

PowerToys auto-update

### Area(s) with issue?

Power Display

### Steps to reproduce

1- Taskbar with auto hide on
2- Open the popup

### ✔️ Expected Behavior

Display this popup above the taksbar

### ❌ Actual Behavior

The popup is appearing on top of it

### Upload Bug Report ZIP-file

_No response_

### Additional Information

_No response_

### Other Software

_No response_

Start in the Power Display popup window placement path and reproduce the issue with Windows taskbar auto-hide enabled. Compare the popup position with the expected taskbar location; done means the popup appears above the taskbar rather than overlapping it.

Written by the indexing model from the issue text.