Enable widgets in launcher preview flag

Test: Widgets fully load in launcher preview with correct size and color
Fix: 185306338, 191499358
Change-Id: I2d02d7a1328ed9ef5d3dfbec090dc1f9908dd527
Merged-In: I2d02d7a1328ed9ef5d3dfbec090dc1f9908dd527

src/com/android/launcher3/config/FeatureFlags.java

@@ -255,7 +255,7 @@ public final class FeatureFlags {
             "Enables scrim over wallpaper for text protection.");
 
     public static final BooleanFlag WIDGETS_IN_LAUNCHER_PREVIEW = getDebugFlag(
-            "WIDGETS_IN_LAUNCHER_PREVIEW", false,
+            "WIDGETS_IN_LAUNCHER_PREVIEW", true,
             "Enables widgets in Launcher preview for the Wallpaper app.");
 
     public static void initialize(Context context) {