Updated bubble bar position to be center aligned with the hotseat

Added a method to the device profile to calculate the vertical center of
the hotseat icons. Simplified the logic for positioning the bubble bar.

Test: TransientBubbleStashControllerTest
Test: PersistentBubbleStashControllerTest
Test: Visual. Go to home page, check that bubble bar is vertically
center aligned with the hotseat
Bug: 345491493
Flag: com.android.wm.shell.enable_bubble_bar

Change-Id: I52f1b94de79f6c912f43a88fcc5c884e20e56310

quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java

@@ -297,6 +297,7 @@ public class TaskbarActivityContext extends BaseTaskbarContext {
             BubbleStashController bubbleStashController = isTransientTaskbar
                     ? new TransientBubbleStashController(dimensionsProvider, this)
                     : new PersistentBubbleStashController(dimensionsProvider);
+            bubbleStashController.setHotseatVerticalCenter(launcherDp.getHotseatVerticalCenter());
             bubbleControllersOptional = Optional.of(new BubbleControllers(
                     new BubbleBarController(this, bubbleBarView),
                     new BubbleBarViewController(this, bubbleBarView, bubbleBarContainer),
@@ -362,8 +363,11 @@ public class TaskbarActivityContext extends BaseTaskbarContext {
     /** Updates {@link DeviceProfile} instances for any Taskbar windows. */
     public void updateDeviceProfile(DeviceProfile launcherDp) {
         applyDeviceProfile(launcherDp);
-
         mControllers.taskbarOverlayController.updateLauncherDeviceProfile(launcherDp);
+        mControllers.bubbleControllers.ifPresent(bubbleControllers -> {
+            int hotseatVertCenter = launcherDp.getHotseatVerticalCenter();
+            bubbleControllers.bubbleStashController.setHotseatVerticalCenter(hotseatVertCenter);
+        });
         AbstractFloatingView.closeAllOpenViewsExcept(this, false, TYPE_REBIND_SAFE);
         // Reapply fullscreen to take potential new screen size into account.
         setTaskbarWindowFullscreen(mIsFullscreen);