Small UI bug when revealing the PK in the sign out modal

**Describe the bug**
Not mission critical, just small UI bug in a screen that won't be looked at very often.

**Steps to reproduce**
1. Go to Settings
2. Click on Sign out
3. See error

**Expected behavior**
Just a normal UI

**Version and platform**
Find your version at the bottom of the Settings sidebar. Write "unknown" if you can't determine it.
- Buzz version: v0.4.26
- OS: 26.2 (25C56) (Tahoe)

**Logs / additional context**
Paste any relevant logs, error messages, or screenshots here.