Resolve "Styling of acceptance terms page is broken"

What does this MR do?

Fixes the User Term Page Styling to the new BS4 format.

ProTip: You need to activate Terms in Admin->Application Settings

Screenshots (if relevant)

Does this MR meet the acceptance criteria?

• Conform by the code review guidelines
  • Has been reviewed by a Frontend maintainer

What are the relevant issue numbers?

Closes #47162 (closed)