[TIMOB-4277] iOS: KitchenSink Base UI>Views>Table Views>Headers. It's possible to get header image to "stamp" onto tableview when updating header

Description: While testing KitchenSink, Base UI>Views>Table Views>Headers, I was able to click on a row to update the header to read "section has been clicked" and the plain header remained on the table view, showing two "B" sections for example. See attached image. Steps to reproduce: 1) Install KS 1.7.0 on an iPhone 4 2) Navigate to Base UI>Views>Table Views>Headers and launch the test 3) Scroll the table so a row is halfway visible under its header (example: Scroll so "Callie" is halfway off the screen at the top of the tableview, and that should place the "C" header at the top of the view.) 4) Tap the row (Callie in the example above) 5) Scroll down to see the result Result: The header image is stamped onto the table wherever it was at the time you clicked the row. The updated Header is also present. Expected Result: The header is updated but not duplicated Notes: OCCURS IN 1.6.2 as well.