Use an own config setting for screenshot mode instead of experimental mode

This is not an experimental feature and it should be possible to enable it
without enabling other features.

Change-Id: Idbdce23d0db2983a4eb1c8e1d02d15c43733f042
Reviewed-on: https://gerrit.libreoffice.org/30848Reviewed-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>
Tested-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>

officecfg/registry/schema/org/openoffice/Office/Common.xcs

@@ -5651,6 +5651,12 @@
         </info>
         <value>false</value>
       </prop>
+      <prop oor:name="ScreenshotMode" oor:type="xs:boolean" oor:nillable="false">
+        <info>
+          <desc>Determines whether the interactive screenshot mode should be enabled.</desc>
+        </info>
+        <value>false</value>
+      </prop>
       <prop oor:name="CollectUsageInformation" oor:type="xs:boolean" oor:nillable="false">
         <info>
           <desc>Determines whether the usage information (like what actions

vcl/source/window/layout.cxx

@@ -198,9 +198,9 @@ void VclContainer::Command(const CommandEvent& rCEvt)
 {
     if (rCEvt.IsMouseEvent() && CommandEventId::ContextMenu == rCEvt.GetCommand())
     {
-        const bool bIsExperimentalMode(officecfg::Office::Common::Misc::ExperimentalMode::get());
+        const bool bScreenshotMode(officecfg::Office::Common::Misc::ScreenshotMode::get());
 
-        if (bIsExperimentalMode)
+        if (bScreenshotMode)
         {
             bool bVisibleChildren(false);
             vcl::Window* pChild(nullptr);
@@ -326,7 +326,7 @@ void VclContainer::Command(const CommandEvent& rCEvt)
 
                     // consume event when:
                     // - CommandEventId::ContextMenu
-                    // - bIsExperimentalMode
+                    // - bScreenshotMode
                     // - bVisibleChildren
                     return;
                 }