In Readonly mode, hide Reset button on Mapping tab

Description

Steps to reproduce:
1. Install Forms and add some external systems (MAI connectors, etc.).
2. Create a new form.
3. Map the form to an external data source.
4. Publish the form.
5. Create a Swedish version of the form.
6. Edit the Swedish version of the form.
7. Go to the Mapping tab.

Expected:
Hide or disable the Reset button.

Actual:
The Reset button looks disabled, but you can still click it.