Copilot didn't use selected lines in the context

**Describe the bug**

When I select code lines in Xcode and ask Copilot to refactor to struct, Copilot replies "You requested to refactor a type to a struct. However, you did not specify which class, view, or model you want to refactor."

**Versions**
- Copilot for Xcode: 0.43.140
- Xcode: 26.0.1
- macOS: 26.0

**Steps to reproduce**
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**Additional context**