Describe the bug

The VSCode extension causes infinite loops when dealing with imported slides, as shown in the video below.

Minimal reproduction

Steps to reproduce the behavior:

1. Initialize a project with pnpm create slidev
2. Install the VSCode extension, open the Slidev view to show preview
3. Open slides.md and go to line 597 where pages/imported-slides.md is imported:

---
src: ./pages/imported-slides.md
hide: false
---

4. When you put the cursor inside the frontmatter, the VSCode extension will make you jump to imported-slides.md in a new tab.
5. Now go back to slides.md. You will see the infinite loop shown in the video.

Environment

• Slidev version: 52.6.0
• Browser: Not relevant
• OS: macOS 15.5
• VSCode: 1.105.1
• VSCode extension: 51.4.0