Make FallbackHome lower priority.

This makes SystemUserHomeActivity, which also has a low priority,
works properly for system user.

Bug: 26358655
Change-Id: If07b39ac5a7015805ac22a968b3d704aaad80012
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 876600e..63a4872 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -2175,7 +2175,7 @@
         <activity android:name=".FallbackHome"
                   android:excludeFromRecents="true"
                   android:theme="@android:style/Theme.Translucent.NoTitleBar">
-            <intent-filter android:priority="-10">
+            <intent-filter android:priority="-1000">
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.HOME" />
                 <category android:name="android.intent.category.DEFAULT" />