This test had been failing with "title can't be blank" a few times
recently. Looking for a difference between the v2 form template (in
app/views/articles) and the ArticleForm component (in
app/javascript/article-form/) showed there is an id on the js form but
not the erb/html form we respond with first.
The test had been sometimes typing the title into the text area before
the component mounts, and trying to view the article gives a
validation error rather than the expected response.
44ab69ae4e