Fix broken a11y function

Due some a11y delegate change on Androidx RecyclerView, some a11y
founctions on docsui are broken.
Remove using RecyclerViewAccessibityDelegate and set a11y delegate
on each ViewHolder on RecyclerView.

Fine tune HorizontalBreadcrumb layout of text also during checking
function normally.

Fix: 139101197
Test: atest DocumentsUIGoogle
Change-Id: I22345a117849167093fd21d5603de3161ab2219a