Merging ub-launcher3-master, build 5437471

Test: Manual

Bug:129423457 PluginCoreLib is not built from source code in master
Bug:129873705 Launcher crashes with Permission denial: writing to settings requires:android.permission.WRITE_SECURE_SETTINGS

Change-Id: Ib95d4de181eb70a30171c6ef511e803816b88dbf