JSON field style bug

<img width="692" height="879" alt="Image" src="https://github.com/user-attachments/assets/e0ada376-54e9-4498-906a-8ec32e173504" />



## Long JSON value in JSON field causes layout overflow in PocketBase (v0.30.3) admin panel


### How to fix
```CSS
.form-field label ~ .code-editor {
  ...
  overflow-y: auto;  /* Adding this line fixes the bug */
}