Honeypot field showing up at bottom of all forms where enabled

Description in #13, #16 were our problem (no wrapper around {{ children }})
This fixed for us in custom theme template container.html.twig:
<div{{ attributes.addClass(classes) }}>{{ children }}</div>

I had the same issue in D9 and turned out it was the custom template fix #16 that helped.
Now I just have to remember why I had removed the wrapper DIV in my theme originally.

I put the patch from #28 into an MR.

This needs reviews and manual tests to ensure it fixes the problem.

It also really needs a test case that demonstrates the problem. Then, we will have a way to actually test the fix and ensure the fix continues to work in the future. This probably just needs to add a containter.html.twig to the testing theme, as described above, then display a form and check the visibility of the honeypot element.