Fix "disabled" at the end of talkback for workPausedCard.

Talk back announces "disabled" at the end because onClick() seems to unncessarily call setEnabled(false). It's not needed
and can be removed.

bug: 379804516
Test: manually with talkback
Flag: EXEMPT bug fix
Change-Id: Iebd0c0689f7a36320ec59b6898daf10988b75cf6