CmdPal: Indexer - Peek is not working

### Microsoft PowerToys version

main

### Installation method

Dev build in Visual Studio

### Area(s) with issue?

Command Palette

### Steps to reproduce

1. Find a file using Search files (Indexer) extension
2. Use More commands menu or shortcut (Ctrl+Space) Open in Peek.
3. Observe that Command Palette closes, but Peek is nowhere to be seen

### ✔️ Expected Behavior

Peek is opened with the selected file

### ❌ Actual Behavior

Command Palette closes, but nothing else happens.

### Upload Bug Report ZIP-file

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### Additional Information

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### Other Software

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Start with the Command Palette's Search files (Indexer) extension and reproduce Open in Peek from a selected file, using the More commands menu or Ctrl+Space in a Visual Studio dev build. Trace the Open in Peek entry point and verify that the selected file is passed to Peek. Done means Command Palette closes and Peek opens the selected file.

Written by the indexing model from the issue text.