Prevent the screen reader box from unexpected scrolling in dream setting
page.

Bug: 228355186
Test: manual
Change-Id: I66a70d6b12bd3a2766e6879cb27c68a851d1dd87
diff --git a/src/com/android/settings/dream/DreamSettings.java b/src/com/android/settings/dream/DreamSettings.java
index acc6973..c96167d 100644
--- a/src/com/android/settings/dream/DreamSettings.java
+++ b/src/com/android/settings/dream/DreamSettings.java
@@ -195,6 +195,7 @@
         mPreviewButton.setOnClickListener(v -> dreamBackend.preview(dreamBackend.getActiveDream()));
 
         mRecyclerView = super.onCreateRecyclerView(inflater, parent, bundle);
+        mRecyclerView.setFocusable(false);
         updatePaddingForPreviewButton();
         return mRecyclerView;
     }