Enable the CUSTOM_LPNH_THRESHOLDS flag.

Decision by PM: Set the default LPNH_TIMEOUT_MS to 450ms.

Bug: 311355495
Test: Manual
Flag: legacy CUSTOM_LPNH_THRESHOLDS ENABLED
Change-Id: I07f075a7c73e8038a83b19cdc1091c0c8735f869

src/com/android/launcher3/LauncherPrefs.kt

@@ -20,7 +20,6 @@ import android.content.Context.MODE_PRIVATE
 import android.content.SharedPreferences
 import android.content.SharedPreferences.OnSharedPreferenceChangeListener
 import android.util.Log
-import android.view.ViewConfiguration
 import androidx.annotation.VisibleForTesting
 import com.android.launcher3.BuildConfig.WIDGET_ON_FIRST_SCREEN
 import com.android.launcher3.LauncherFiles.DEVICE_PREFERENCES_KEY
@@ -319,7 +318,7 @@ class LauncherPrefs(private val encryptedContext: Context) {
         val LONG_PRESS_NAV_HANDLE_TIMEOUT_MS =
             nonRestorableItem(
                 "LPNH_TIMEOUT_MS",
-                ViewConfiguration.getLongPressTimeout(),
+                450,
                 EncryptionType.MOVE_TO_DEVICE_PROTECTED
             )
         @JvmField

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

@@ -33,7 +33,6 @@ import static com.android.launcher3.uioverrides.flags.FlagsFactory.getReleaseFla
 import static com.android.wm.shell.Flags.enableTaskbarNavbarUnification;
 
 import android.content.res.Resources;
-import android.view.ViewConfiguration;
 
 import androidx.annotation.VisibleForTesting;
 
@@ -132,7 +131,7 @@ public final class FeatureFlags {
                     "Allow entering All Apps from Overview (e.g. long swipe up from app)");
 
     public static final BooleanFlag CUSTOM_LPNH_THRESHOLDS =
-            getReleaseFlag(301680992, "CUSTOM_LPNH_THRESHOLDS", DISABLED,
+            getReleaseFlag(301680992, "CUSTOM_LPNH_THRESHOLDS", ENABLED,
                     "Add dev options to customize the LPNH trigger slop and milliseconds");
 
     public static final BooleanFlag ANIMATE_LPNH =
@@ -155,8 +154,7 @@ public final class FeatureFlags {
                     LONG_PRESS_NAV_HANDLE_EXTRA_TOUCH_WIDTH_DP);
 
     public static final IntFlag LPNH_TIMEOUT_MS =
-            FlagsFactory.getIntFlag(301680992, "LPNH_TIMEOUT_MS",
-                    ViewConfiguration.getLongPressTimeout(),
+            FlagsFactory.getIntFlag(301680992, "LPNH_TIMEOUT_MS", 450,
                     "Controls lpnh timeout in milliseconds", LONG_PRESS_NAV_HANDLE_TIMEOUT_MS);
 
     public static final BooleanFlag ENABLE_SHOW_KEYBOARD_OPTION_IN_ALL_APPS = getReleaseFlag(