Expose settings provider to Instant Apps

Provider enforcement is not yet in, but the settings provider is needed
so expose it now.

Test: Builds
Change-Id: I9afffb45043220e4b85778bbd4f5c4143831fc74

packages/SettingsProvider/AndroidManifest.xml

@@ -17,6 +17,7 @@
                   android:multiprocess="false"
                   android:exported="true"
                   android:singleUser="true"
-                  android:initOrder="100" />
+                  android:initOrder="100"
+                  android:visibleToInstantApps="true" />
     </application>
 </manifest>