[fenix] For https://github.com/mozilla-mobile/fenix/issues/8545: Fix unnecessary scroll in home screen

Changed the height of the recycler view inside the home fragment
to ‘wrap_content’ to avoid scrolling if the viewport is not filled
with elements.

Closes https://github.com/mozilla-mobile/fenix/issues/8545

app/src/main/res/layout/fragment_home.xml

@@ -65,7 +65,7 @@
     <androidx.recyclerview.widget.RecyclerView
         android:id="@+id/sessionControlRecyclerView"
         android:layout_width="match_parent"
-        android:layout_height="match_parent"
+        android:layout_height="wrap_content"
         android:clipChildren="false"
         android:clipToPadding="false"
         android:layout_marginBottom="48dp"