Peek cannot be activated using the spacebar in File Explorer windows opened by other applications

### Microsoft PowerToys version

0.96.1

### Installation method

PowerToys auto-update

### Area(s) with issue?

Peek

### Steps to reproduce

Open a path in the Everything search tool

### ✔️ Expected Behavior

After selecting "Open path" in Everything, when a file/folder is selected in the opened File Explorer window, pressing the spacebar should normally activate Peek

### ❌ Actual Behavior

No response appears...?

### Additional Information

OS version: Win10 Pro 22H2 19045.6691 / Win11 Pro 24H2 26100.7623
System language: Chinese
Installation type: User Installation
Running as: Administrator

### Other Software

None

Start by reproducing the issue through the Everything search tool's “Open path” action, then compare Peek activation in that File Explorer window with a normally opened window. Trace the Peek entry point and the spacebar handling for externally opened Explorer windows; done means the spacebar consistently opens Peek for a selected file or folder in both cases.

Written by the indexing model from the issue text.