The help text for the event type field is animated using a technique
unaffected by `Capybara.disable_animation`. Wait for the animation.
Resolves: #2356
Works around: #2661
The `find` was added to try to fix the flickering test: ac3337b
`find` and `fill_in` have the same `default_max_wait_time`, so didn't
change the problem.
The reason why this fails sometimes is that the Javascript for the
description (for the text editor) moves the 'Do you require something
special?' link a bit down. This causes that the link is not actually
clicked if capybara found it before it moved. Ensuring that the link is
searched after the description has been introduced solves the problem.
Finally fixes https://github.com/openSUSE/osem/issues/2356
Co-authored-by: Stephan Kulow <stephan@kulow.org>
