Features keep stop working

### Microsoft PowerToys version

0.99.1

### Installation method

Microsoft Store

### Area(s) with issue?

Always on Top

### Steps to reproduce

I don't do anything, the tool(s) stop working and I have to close and restart Powertoys

### ✔️ Expected Behavior

For it to work

### ❌ Actual Behavior

Nothing happens

### Upload Bug Report ZIP-file

_No response_

### Additional Information

OS Version: Microsoft Windows NT 10.0.26200.0
.NET Version: .NET 9.0.15
PowerToys is running as user (non-elevated)
Install scope: per user
Operating System Language: English (United States)
System locale: en-US

### Other Software

_No response_

Start by reproducing the Always on Top failure with PowerToys 0.99.1 installed from the Microsoft Store on the reported Windows and .NET versions. Capture the Bug Report ZIP and identify when the feature stops responding; done means the failure is reproducible and the feature works without restarting PowerToys.

Written by the indexing model from the issue text.