Maintain the recommendations that were initially displayed

- The component names of the widgets shown on first opening the picker
are saved across orientation change - and only those shown initially are
displayed.

* http://screencast/cast/NDkyMDQ0OTg3OTI0NDgwMHw4ZGU1ZjRmNy0zNQ
* https://screencast/cast/NTc1NjQ1NDI5MTExMTkzNnxiZGJlMjQ2Yi01Ng

Bug: 331776686
Flag: ACONFIG com.android.launcher3.enable_categorized_widget_suggestions TEAMFOOD
Test: Manual - see videos.
Change-Id: I6af7421c2757fde321d06406514ab2576a48fb47