[android] fix preview in android studio for opening_hours fragment

Signed-off-by: Harry Bond <me@hbond.xyz>

android/app/src/main/res/layout/place_page_opening_hours_fragment.xml

@@ -3,6 +3,7 @@
   xmlns:android="http://schemas.android.com/apk/res/android"
   xmlns:app="http://schemas.android.com/apk/res-auto"
   xmlns:tools="http://schemas.android.com/tools"
+  tools:visibility="visible"
   style="@style/PlacePageItemFrame">
 
   <com.google.android.material.imageview.ShapeableImageView
@@ -58,6 +59,8 @@
     android:layout_alignStart="@id/oh_nonbusiness_time"
     android:layout_below="@id/oh_nonbusiness_time"
     app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
+    tools:itemCount="3"
+    tools:listitem="@layout/place_page_opening_hours_item"
     android:layout_marginTop="8dp"/>
 
 </RelativeLayout>