when removing the everything in the playground input box, the page crashes

**Describe the bug**
A clear and concise description of what the bug is.
page crashes on text delete
**To Reproduce**
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remove everything within the box
**Expected behavior**
A clear and concise description of what you expected to happen.
doesn't get deleted
**Screenshots**
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[ffmpegwasm.netlify.app-1730722163433.log](https://github.com/user-attachments/files/17617888/ffmpegwasm.netlify.app-1730722163433.log)

**Desktop (please complete the following information):**
- OS: [e.g. iOS] ChromeOS
- Browser [e.g. **chrome**, safari]
- Version [e.g. 22] 107

**Additional context**
Add any other context about the problem here.