Revert back thick slider

Revert to the slider with fixed icon position that changes color as it
slides under it.

For some reason, RTL doesn't respond great to start/end but it does to
left/right in the inner drawables.

Test: manual
Fixes: 179928515
Change-Id: If6f227802e3c83a5bd8f74d4fd3acf8dc4441ccc