[NavigationRail] Design review adjustments

PiperOrigin-RevId: 698483697

Author: imhappi

catalog/java/io/material/catalog/navigationrail/NavigationRailSubMenuDemoFragment.java

@@ -78,10 +78,12 @@ public View onCreateDemoView(
             efab.shrink();
             navigationRailView.collapse();
             button.setContentDescription(getResources().getString(R.string.cat_navigation_rail_expand_button_description));
+            button.setImageResource(R.drawable.ic_drawer_menu_24px);
           } else {
             efab.extend();
             navigationRailView.expand();
             button.setContentDescription(getResources().getString(R.string.cat_navigation_rail_collapse_button_description));
+            button.setImageResource(R.drawable.gs_menu_open_vd_theme_24);
           }
         });
     return view;

lib/java/com/google/android/material/navigation/NavigationBarMenuView.java

@@ -36,6 +36,7 @@
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.accessibility.AccessibilityNodeInfo;
+import android.widget.TextView;
 import androidx.annotation.Dimension;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
@@ -139,6 +140,7 @@ public NavigationBarMenuView(@NonNull Context context) {
     } else {
       set = new AutoTransition();
       set.setOrdering(TransitionSet.ORDERING_TOGETHER);
+      set.excludeTarget(TextView.class, true);
       set.setDuration(
           MotionUtils.resolveThemeDuration(
               getContext(),