Add ripple effect to work toggle button and "turn on work apps" button

Created new drawable xml specifically for the turn on work apps button because
the dismiss button (x) icon on the EDU card shares this drawable. This way I don't
cause collateral damage for the (x) icon dismiss button.

Changed shape -> ripple in work_apps_toggle background

bug: 229385255
test: Manually on oriole and video in bug thread
Change-Id: Id01bfb04c07a724687b0322339b12c8fc9130dfa