Github Copilot code completions overlap navigator and other Xcode items

**Describe the bug**

When you are writing a long line of code which nears the end and Copilot offers you a code completion, you can clearly see the preview overlapping everything. From the navigator to even the `About Xcode` window.

**Versions**
- Copilot for Xcode: 0.31.0
- Xcode: 16.2
- macOS: Sequoia 15.0

**Steps to reproduce**
1. Write a long line of code to almost reach the navigator
2. Get the code completion

**Screenshots**