Init with mIsLumaSamplingEnabled = true

Bug: 230395757
Test: Factory reset in unfolded. Check bar sampling. Fold and swipe up from an app different from system color to overview. Observe the bar color change.
Change-Id: I7d94a3a8f17a40fbabd4d65629846eb12bdbd3d6
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarSharedState.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarSharedState.java
index 41b777b..e2c71bf 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarSharedState.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarSharedState.java
@@ -15,6 +15,7 @@
  */
 package com.android.launcher3.taskbar;
 
+import static android.view.Display.DEFAULT_DISPLAY;
 import static android.view.InsetsFrameProvider.SOURCE_DISPLAY;
 import static android.view.WindowInsets.Type.mandatorySystemGestures;
 import static android.view.WindowInsets.Type.navigationBars;
@@ -53,8 +54,8 @@
     public float navButtonsDarkIntensity;
 
     // TaskbarManager#onNavigationBarLumaSamplingEnabled()
-    public int mLumaSamplingDisplayId;
-    public boolean mIsLumaSamplingEnabled;
+    public int mLumaSamplingDisplayId = DEFAULT_DISPLAY;
+    public boolean mIsLumaSamplingEnabled = true;
 
     public boolean setupUIVisible = false;