Current prompt's margins look off in chat hover preview

```
Version: 1.138.0-insider (user setup)
Commit: 60ac69b364809ee6976d6dc3ed74cc7628f637da
Date: 2026-09-11T07:31:23Z
Electron: 42.10.0
ElectronBuildId: 15109253
Chromium: 148.0.7778.280
Node.js: 24.18.1
V8: 14.8.178.38-electron.0
@github/copilot: 1.0.84-4
@github/copilot-sdk: 1.0.13
OS: Windows_NT arm64 10.0.26200
```

If I hover over a chat to see the current state, I'll see the following

However, I think the margins look a bit off, and it is hard to discern parts of the screen - the prompt sort of bleeds into the reasoning here.