There's a random failure in this spec, where the CI triggers this error:
> Failure/Error: check('checkbox')
>
> Selenium::WebDriver::Error::ElementClickInterceptedError:
> element click intercepted: Element <input required="required" type="checkbox" value="on" name="dossier[champs_attributes][7][value]" id="dossier_champs_attributes_7_value"> is not clickable at point (205, 892). Other element would receive the click: <div class="send-dossier-actions-bar">...</div>
That's because the checkbox is partially overlapped by the sticky
action bar at the bottom of the screen – but only _some of the time_.
This commit attempts to fix the issue by manually scrolling the checkbox
at the center of the screen before clicking it.
b466fa7878