Add missing spacers in the number password layout

bug: 5366732
Change-Id: Ie9f56fb5bd9978d5882197a2305a96fb40fccb11
diff --git a/java/res/xml/kbd_rows_number.xml b/java/res/xml/kbd_rows_number.xml
index 21d0656..90ac568 100644
--- a/java/res/xml/kbd_rows_number.xml
+++ b/java/res/xml/kbd_rows_number.xml
@@ -36,6 +36,7 @@
                     latin:keyStyle="num2KeyStyle" />
                 <Key
                     latin:keyStyle="num3KeyStyle" />
+                <Spacer />
             </Row>
             <Row>
                 <Key
@@ -44,6 +45,7 @@
                     latin:keyStyle="num5KeyStyle" />
                 <Key
                     latin:keyStyle="num6KeyStyle" />
+                <Spacer />
             </Row>
             <Row>
                 <Key