Content warning gets removed when editing post

### Site

phanpy.social

### Version

2026.01.07.2e1d0c4

### Instance

spookygirl.boo

### Browser

- Safari on iPadOS 26.3

### Bug description

When editing one of my posts that has a content warning attached, the content warning is removed.

### To reproduce

1. Publish a post with a content warning
2. Click on the post’s edit button
3. Edit the post’s main text
4. Publish the changes

### Expected behavior

The post gets published with only the main text changed, but content warning left as-is.

### Other

Since I don’t expect that I’ll have to re-add the content warning every time, I sometimes end up accidentally leaving a sensitive post up with no content warning.