Steps to Reproduce:
Start with 7.1.x.
1. Content > Forms .
2. Click the Add ( + ) button.
3. Enter a Form name and add a Element.
4. Click the top right Kebab menu > Settings.
5. Toggle on the "Require CAPTCHA."
6. Go to the Homepage.
7. Click the Add ( + ) button.
8. Search "Form" and add it.
9. Click "Select Form" and select the Form with the CAPTCHA.
10. Follow the steps to Upgrade into 7.2.x.
11. Start up the new build.
12. Check if the CAPTCHA is working.
Expected: The Form will still show the CAPTCHA after the upgrade.
Actual: The CAPTCHA does not have an input box and does not load the CAPTCHA image.