Show 3 button nav on phone in Taskbar (1/2)

* TODO: Landscape/seascape support,
        Separate nav spacing out into
        separate class/add tests

Bug: 219035565
Change-Id: I8f5c007f04ea4d6df15962772806356181d764ff

src/com/android/launcher3/DeviceProfile.java

@@ -407,7 +407,7 @@ public class DeviceProfile {
         // Add a bit of space between nav bar and hotseat in vertical bar layout.
         hotseatBarSidePaddingStartPx = isVerticalBarLayout() ? workspacePageIndicatorHeight : 0;
         updateHotseatSizes(pxFromDp(inv.iconSize[INDEX_DEFAULT], mMetrics));
-        if (areNavButtonsInline) {
+        if (areNavButtonsInline && !isPhone) {
             /*
              * 3 nav buttons +
              * Spacing between nav buttons +