Add MATCH_UNINSTALLED_PACKAGES when obtaining activity info

This is a workaround for PackageManager#getActivityInfo throwing an
exception when HSUM is enabled despite the app being installed and
running.

Fix: 354884302
Fix: 351147255
Test: with DW enabled, HandleMenu has app name visible and entering
freeform does not cause a crash.
Flag: EXEMPT bugfix

Change-Id: Ia4b2cf80278e49fe1b6d26ea99d4be48110c7232