Migrate ENABLE_GRID_ONLY_OVERVIEW to aconfig flag

Bug: 270397206
Test: OverviewActionsControllerTest
Flag: enableGridOnlyOverview
Change-Id: I1519e0e8d5b8a7e294d2d310c1614e8462649031
diff --git a/src/com/android/launcher3/DeviceProfile.java b/src/com/android/launcher3/DeviceProfile.java
index 94eb7a3..f61723a 100644
--- a/src/com/android/launcher3/DeviceProfile.java
+++ b/src/com/android/launcher3/DeviceProfile.java
@@ -1761,7 +1761,7 @@
 
     /** Gets the space that the overview actions will take, including bottom margin. */
     public int getOverviewActionsClaimedSpace() {
-        int overviewActionsSpace = isTablet && FeatureFlags.enableGridOnlyOverview()
+        int overviewActionsSpace = isTablet && Flags.enableGridOnlyOverview()
                 ? 0
                 : (overviewActionsTopMarginPx + overviewActionsHeight);
         return overviewActionsSpace + getOverviewActionsClaimedSpaceBelow();