Update layout of SeekBarWithIconButtonsView

1. Updating the icon sizes with frames to increase the touchable area
   for the buttons.
2. Updating the documents for the method setProgress.

Bug: 269112088
Test: manual - attach a screenshot to the bug
Test: atest SeekBarWithIconButtonsViewTest
Change-Id: I7ef91869e63ad7388203c71c4c38f54089e03e16