[MultiUser] Ensure sysyuig activities use user 0

Use packagename to determine if intent is in the same package and which
user should be used when launching the activity.

Bug: 229730387
Test: Manual on device
Change-Id: I1f1033dc875899567edd42a6fc67f9e6124fce73
Merged-In: I1f1033dc875899567edd42a6fc67f9e6124fce73
diff --git a/packages/SystemUI/res/values/config.xml b/packages/SystemUI/res/values/config.xml
index ae5b8d8..447bc0e 100644
--- a/packages/SystemUI/res/values/config.xml
+++ b/packages/SystemUI/res/values/config.xml
@@ -725,4 +725,10 @@
         <item>@*android:string/status_bar_alarm_clock</item>
         <item>@*android:string/status_bar_call_strength</item>
     </string-array>
+
+    <!-- Packages of SystemUI -->
+    <string-array name="system_ui_packages" translatable="false">
+        <item>com.android.keyguard</item>
+        <item>com.android.systemui</item>
+    </string-array>
 </resources>