Widget text fields to not remain highlighted after making changes

When making changes to the properties of widgets in the details panel, the text fields to not remain highlighted. This functionality appears present in other areas of the engine. Such as when dealing with transforms on actors.

1. Open the editor
2. Create a new widget blueprint
3. Add a widget to the designer tab
4. Select the newly added widget
5. Make a change to text field in its details panel (example: position, size, z order, ect)
6. Press Enter

Result: The field does not remain highlighted (as seen with other text fields in the editor)
Expected: The text field would remain highlighted so that the user can continue to make changes if needed until clicking somewhere else