winget install github.copilot installs PowerShell even when PowerShell Preview is installed

### Describe the bug

When installing GitHub Copilot CLI with `winget`, running `winget install github.copilot` installs `microsoft.powershell` even when `microsoft.powershell.preview` with a newer version of PowerShell is installed and available.

### Affected version

1.0.44

### Steps to reproduce the behavior

1. Install PowerShell preview on Windows with `winget install Microsoft.PowerShell.Preview`
2. Install GitHub Copilot CLI with `winget install github.copilot`

### Expected behavior

The installer sees `Microsoft.PowerShell.Preview` and uses that, instead of also installing the GA `Microsoft.PowerShell`.

### Additional context

This is fundamentally an issue in the WinGet schema, which needs OR options.

Start by reproducing the two installation steps on Windows with PowerShell Preview installed. Then investigate the WinGet package schema and its dependency options; done means installing github.copilot recognizes the preview installation and does not add Microsoft.PowerShell GA.

索引モデルが issue の本文から書いたものです。