Menubar icons: add icon to Help -> SendFeedback

Change-Id: If88c59e6beddfdfcca95448334cc558ae5720366
Reviewed-on: https://gerrit.libreoffice.org/57042
Tested-by: Jenkins
Reviewed-by: andreas_kainz <kainz.a@gmail.com>

officecfg/registry/data/org/openoffice/Office/UI/GenericCommands.xcu

@@ -4997,6 +4997,9 @@
         <prop oor:name="Label" oor:type="xs:string">
           <value xml:lang="en-US">Send Feedback...</value>
         </prop>
+        <prop oor:name="Properties" oor:type="xs:int">
+          <value>1</value>
+        </prop>
       </node>
       <node oor:name=".uno:QuestionAnswers" oor:op="replace">
         <prop oor:name="Label" oor:type="xs:string">