Prevent overlays on vCard import flows

Bug: 172252122
Test: manual with POC
Change-Id: I69c46f073f324005c3dd214447792fc20fe75a2b
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index ffd8553..a5b25de 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -53,6 +53,7 @@
     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
     <!-- Required in P to run Service.startForeground() -->
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE"/>
+    <uses-permission android:name="android.permission.HIDE_NON_SYSTEM_OVERLAY_WINDOWS" />
 
     <uses-feature
         android:name="android.hardware.telephony"