Unfocus sliders on click.

Screencast: https://screencast.googleplex.com/cast/NTcyNDM1NTA0NzcxODkxMnw1NDVhZjAxZi0zYw
Prevents arrowkeys from affecting slider position.

Fixes: 267683919
Test: npm run test:unit:ci
Change-Id: I3d118073a51619d3e33c5d6a5ef3bef485c0e96e
2 files changed