Viewing Plan using Ctlr+E in Github Copilot CLI in VS Code Terminal doesn't works

### Describe the bug

Repro Steps
1. Open Github Copilot CLI
2. Use Plan Mode
3. Curate a plan
4. Press Ctrl+E to view the plan

Expected
1. Opens up the Plan either in Terminal or VS Code

Actual
1. Opens up the File Viewer

### Affected version

_No response_

### Steps to reproduce the behavior

Repro Steps
1. Open Github Copilot CLI
2. Use Plan Mode
3. Curate a plan
4. Press Ctrl+E to view the plan

Expected
1. Opens up the Plan either in Terminal or VS Code

Actual
1. Opens up the File Viewer

### Expected behavior

_No response_

### Additional context

_No response_