Hide hotseat when bubble bar is expanded.

Added logic to stash the hotseat when on launcher home screen.

Bug: 280494203
Test: Manual:
http://recall/-/gx8ASgewUeUS3QYohfrd1J/fjfjUw296LRXUm9uYqXU4K
all tests in com.android.launcher3.taskbar
Flag: com.android.wm.shell.enable_bubble_bar

Change-Id: I67b298831eaed9c549a2fae7dc5a0d9fae51f7c4
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 365e3d4..fa7f564 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -2678,6 +2678,7 @@
             }
 
             writer.println(prefix + "  Hotseat");
+            mHotseat.dump(prefix, writer);
             ViewGroup layout = mHotseat.getShortcutsAndWidgets();
             for (int j = 0; j < layout.getChildCount(); j++) {
                 Object tag = layout.getChildAt(j).getTag();