Make dashboard tile refresh more effcient.

Instead of removing and re-adding all dashboard tiles, figure out a diff
and rebind/add/remove as necessary.

Bug: 32255863
Test: RunSettingsRoboTests
Change-Id: I9d87ba30ab746257d0ea71282951348ebc4e8965

src/com/android/settings/dashboard/DashboardFeatureProviderImpl.java

@@ -72,4 +72,10 @@ public class DashboardFeatureProviderImpl implements DashboardFeatureProvider {
         sb.append(component.getClassName());
         return sb.toString();
     }
+
+    @Override
+    public ProgressiveDisclosureMixin getProgressiveDisclosureMixin(Context context,
+            DashboardFragment fragment) {
+        return new ProgressiveDisclosureMixin(context, this, fragment);
+    }
 }