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)
13 files changed