"align" option is missing for mj-divider in Style Manager

### GrapesJS version

- [x] I confirm to use the latest version of GrapesJS

### GrapesJS MJML version

- [x] I confirm to use the latest version of GrapesJS MJML

### What browser are you using?

Chrome

### Reproducible demo link

https://grapesjs.com/demo-mjml.html

### Describe the bug

Hello,

I see that there is no "align" option for the Divider component mj-divider, but in the MJML documentation this option exists:
https://documentation.mjml.io/#mj-divider

Could you please add it or point me to the right direction to be able to extend this component ?

Thank you

### Code of Conduct

- [x] I agree to follow this project's Code of Conduct