Revert "Stop using ATM#setTaskWindowingMode in CTS" Revert submission 14124672-migrate-ss-set-mode Reason for revert: b/185192439 Reverted Changes: I8f3b19b77:Stop using ATM#setTaskWindowingMode in CTS I43884c329:Make sure activity is started in requested windowi... Bug: 177190100 Bug: 185192439 Change-Id: I97cfb08333ba65eeadaf309b3fcd8701be22e082 (cherry picked from commit b34f036bdd5e86f0195d5db9821e136813c495ce)