Found while testing MDLQA-7889

When adding a record to the database activity module and then clicking on the "Save and add another" button, The form that loads is populated with the previously saved data.

Steps to reproduce:

1. As a teacher Create a database activity with a picture field
2. As a student navigate to the database activity.
3. As a student click on "Add entry"
4. As a student Set the Title to "Moodle" and upload a picture
5. Click "Save and add another"

Expected result: You will get a blank form to add a new entry
Actual result: The previously added record is displayed including the uploaded pictures.