Fix failure in `click_test.js`
Fix failure in `click_test.js`

* In the drag interactions tests, make sure the notifier doesn't hide
  the drag elements.

aburato/plotly.js,plotly/plotly.js,iongroup/plotly.js,plotly/plotly.js,asolagmbh/plotly.js,iongroup/plotly.js,etpinard/plotly.js,aburato/plotly.js,etpinard/plotly.js,iongroup/plotly.js,plotly/plotly.js,asolagmbh/plotly.js,plotly/plotly.js,etpinard/plotly.js,asolagmbh/plotly.js