Since August 29, probably due to a change in the browser used by GitHub
Actions (since branches whose code we didn't change were suddenly
affected that day), many tests related to proposals are failing on
GitHub Actions. Although every time the test suite is run different
tests fail, on each run at least half a dozen tests fail.
Most tests have one thing in common: they click on an element on the
`proposals#show` page, and the click isn't done correctly.
One possible explanation is that the video included on the page causes
the page to scroll at the exact same time that Capybara is clicking on a
link, which results in a misclick.
I haven't been able to reproduce the issue on my machine, so I'm not
sure whether giving the video element a fixed height using CSS (so the
page doesn't scroll when the iframe is loaded) could solve the issue.
But, after using proposals without videos in the tests (except the tests
testing the videos themselves), all these tests are passing in the test
suite.
So, for now, we're simply removing the videos in the proposal factories.
Note this issue wasn't caused by the "no cookie" changes done in commit
ee64efe659, since running the tests in Cosul Democracy 2.1.1 (which
didn't contain those changes) also fails on GitHub Actions.
bedcb5bca2