There is currently a small bug in the Happypoint block: if the editor enters an iframe url in the input, the iframe is shown even if the `mailing list iframe` checkbox is unchecked. This is not the expected behaviour, at least according to the help text below the input!

Tasks

• Implement one of the two options, in priority:
  1. disabling the iframe url field when the toggle button is Off.
  2. automatically switching On the toggle button as soon as users enter a Iframe url in the field
• Make sure existing content is still displayed.
• If toggle button switch to off, then iframe not displayed in the frontend

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