[Side editor] When entry is in Modified status, Published tab is editable
### Node Version

v20.18.1

### NPM/Yarn/PNPM Version

npm

### Strapi Version

v0.0.0-experimental.e12978dcee698470990e9c5c63384faf2c307443

### Operating System

MacOS

### Database

SQLite

### Javascript or Typescript

Javascript

### Reproduction URL

_No response_

### Bug Description

When entry is in Modified status (not in Draft status), Published tab is editable in the Preview Side Editor.
Though, Save button is disabled, and Cmd+Enter leads to an error message.

### Steps to Reproduce

Go to preview for a published entry

Go to Published tab, check that fields are not editable

Go to Draft tab, make changes, save

Check Entry has now modified status

Go to Published tab, check that fields are now editable

Make updates, pressCMD Enter (Save buttons are correctly disabled)

### Expected Behavior

As in Draft status, Published tab fields shouldn't be editable, they should be gray displayed.

### Logs

```shell

```

### Code Snippets

_No response_

### Media

https://github.com/user-attachments/assets/7edec2e9-1546-4446-b914-09338c72f6df

### Additional information

_No response_

### Confirmation Checklist

- [x] I have checked the existing [issues](https://github.com/strapi/strapi/issues) for duplicates.
- [x] I agree to follow this project's [Code of Conduct](https://github.com/strapi/strapi/blob/develop/CODE_OF_CONDUCT.md).