Add maxWidth to pause work app button and ellipsize at the end

Width of text given by UX is 214dp so we can set the maxWidth and ellipsize at the end.

Bug: 298447370
Test: Manual photo: https://screenshot.googleplex.com/98Jnuh3TmLCtd24
Flag: n/a
Change-Id: I750a1669f94f22f60f4fb22db7d6b0ed7678c506