Avoid using secondary displays as launch params when not support

Activities were moved on secondary displays when layouting tasks by
LaunchParamsController while the device has no multi-displays support.

Bug: 136607870
Test: atest TaskLaunchParamsModifierTests
Change-Id: If17f119008cb2fa9ab08090f128c83215f8523a0
Merged-In: If17f119008cb2fa9ab08090f128c83215f8523a0
(cherry picked from commit 740448f0)