iOS - Discussions - When selecting topic dropdown focus should move to the nearest focusable button
1) On 'Create a new post' screen when selecting the dropdown, the focus is still underneath on "title" and "question". When user select a dropdown item, it seems like the focus will go to the nearest focusable button.
2) On selecting topic dropdown it should say dropdown instead of button.
Steps to Reproduce
1) Login to edX app.
2) Tap on any course from 'My Courses' screen.
3) Tap on 'Discussions' tab.
4) Tap on 'Create a new post'.
5) Select any topic from topic dropdown and view.