Hide "additional info" when active dream does not support.

Only show the "additional info", which displays dream complications,
when supported by the user selected dream.

Test: make -j86 RunSettingsRoboTests
ROBOTEST_FILTER="com.android.settings.dream.DreamSettingsTest"
Test: verified on device switching between different dreams
Bug: 223860510
Fix: 223860510

Change-Id: I63872ea9ab9f42be47f8e2f7c3835b55056e6588