[iOS] Widget fake selection is not correctly removed.

[kkrzton]

Steps to reproduce

1. Go to ​http://ckeditor.com/demo#widgets.
2. Focus code widget inside second editor.
3. Click somewhere else to focus the text.
4. Press enter.

Expected result

The newline is inserted (the caret is placed in the text content).

Actual result

The widget editing dialog is opened.

As you may see on attached screenshot, the caret was placed on the tap position and virtual keyboard appeared. However, selected widget still has blue border which means fake selection (I assume, it may be some other focus thing?) is still active.

Other details (browser, OS, CKEditor version, installed plugins)

Safari, iOS 9.3.1.