Add a new START_ACTIVITIES_FROM_BACKGROUND
signature|privileged|vendorPrivileged|oem
permission

And grant it to SystemUI and Shell (adb shell am start).

Bug: 110956953
Test: atest WmTests:ActivityStarterTests
Change-Id: I4885a9a62ee8d47a3aef85f0e34b746c3f51ca2b
diff --git a/packages/SystemUI/AndroidManifest.xml b/packages/SystemUI/AndroidManifest.xml
index 1c1a140..b4f2711 100644
--- a/packages/SystemUI/AndroidManifest.xml
+++ b/packages/SystemUI/AndroidManifest.xml
@@ -87,6 +87,7 @@
     <uses-permission android:name="android.permission.STOP_APP_SWITCHES" />
     <uses-permission android:name="android.permission.SET_SCREEN_COMPATIBILITY" />
     <uses-permission android:name="android.permission.START_ANY_ACTIVITY" />
+    <uses-permission android:name="android.permission.START_ACTIVITIES_FROM_BACKGROUND" />
     <uses-permission android:name="android.permission.INTERACT_ACROSS_USERS" />
     <uses-permission android:name="android.permission.INTERACT_ACROSS_USERS_FULL" />
     <uses-permission android:name="android.permission.GET_TOP_ACTIVITY_INFO" />