tdf#87794 Hide contextual media player toolbar

Change-Id: I71dce7a5ad7f898b4338f95b1fc3bfca5080907a
Reviewed-on: https://gerrit.libreoffice.org/28820Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

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

@@ -909,7 +909,7 @@
           <value xml:lang="en-US">Media Playback</value>
         </prop>
         <prop oor:name="Visible" oor:type="xs:boolean">
-          <value>true</value>
+          <value>false</value>
         </prop>
         <prop oor:name="ContextSensitive" oor:type="xs:boolean">
           <value>true</value>