[Catalog] When bottom sheet is collapsed, back callback is enabled

Resolves #3592
Resolves #3573

GIT_ORIGIN_REV_ID=39e07227cdb20fcb1c31850c4d4aff40e7b65441
PiperOrigin-RevId: 568545360

Author: manabu-nakamura

catalog/java/io/material/catalog/bottomappbar/BottomAppBarMainDemoFragment.java

@@ -236,9 +236,9 @@ private void updateBackHandlingEnabled(int state) {
     switch (state) {
       case BottomSheetBehavior.STATE_EXPANDED:
       case BottomSheetBehavior.STATE_HALF_EXPANDED:
+      case BottomSheetBehavior.STATE_COLLAPSED:
         bottomDrawerOnBackPressedCallback.setEnabled(true);
         break;
-      case BottomSheetBehavior.STATE_COLLAPSED:
       case BottomSheetBehavior.STATE_HIDDEN:
         bottomDrawerOnBackPressedCallback.setEnabled(false);
         break;