Make hotseatQsbShadowHeight public

This variable is used during layout of the psb in hotSeat.java. It is specifically
applied to calculate the qsbOffsetY()

bug: 413719316
Test: manually presubmit
Flag: com.google.android.apps.nexuslauncher.psb_aim_reskin
Change-Id: I9b4bd244a39de61e7ef23dbf477e1808f30f5401

src/com/android/launcher3/DeviceProfile.java

@@ -236,7 +236,7 @@ public class DeviceProfile {
     public int hotseatQsbWidth; // only used when isQsbInline
     public final int hotseatQsbHeight;
     public final int hotseatQsbVisualHeight;
-    private final int hotseatQsbShadowHeight;
+    public final int hotseatQsbShadowHeight;
     public int hotseatBorderSpace;
     private final int mMinHotseatIconSpacePx;
     private final int mMinHotseatQsbWidthPx;