Background
In usability testing less experienced users did not realize that the template search was a search field. It's currently the wrong widget and therefore missing the search icon, placeholder, and clear button once there is content. This is especially important because it can take the results a long time to load and if they are not aware it's a search, they don't wait for the results and give up.
Requirements
- Show search icon in text field (same as OOUI SearchInputWidget (type=search))
- Add placeholder "Find template"
- No feature flag needed, can be deployed to all wikis immediately and should apply to both the old and new VE template dialog
Nice to have
- Add clear button (same as OOUI SearchInputWidget (type=search))