SystemUI: Whitelist QuickAccessWallet plugin

This is required for cards & passes integration in the power menu
on user builds.

Change-Id: Ib2b4de79f23abdb9859c9f9c84f0e10f359030e3

overlay/common/frameworks/base/packages/SystemUI/res/values/config.xml

@@ -28,4 +28,9 @@
          does not work well, particularly with noisy touchscreens. Note that disabling it may
          increase the rate of unintentional unlocks. -->
     <bool name="config_lockscreenAntiFalsingClassifierEnabled">false</bool>
+
+    <!-- SystemUI Plugins that can be loaded on user builds. -->
+    <string-array name="config_pluginWhitelist" translatable="false">
+        <item>com.android.systemui.plugin.globalactions.wallet</item>
+    </string-array>
 </resources>