res/layout/system_shortcut_spacer.xml

<?xml version="1.0" encoding="utf-8"?>

<Space
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="0dp"
    android:layout_height="match_parent"
    android:layout_weight="1"
    android:id="@+id/shortcut_spacer"/>