[SSE] Fix context menu for image/shape when image/shape is selected after plugin object

apps/documenteditor/main/app/view/DocumentHolder.js

@@ -2370,6 +2370,7 @@ define([
                             caption: this.textRotate270,
                             value  : 0
                         }).on('click', _.bind(me.onImgRotate, me)),
+                        { caption: '--' },
                         new Common.UI.MenuItem({
                             caption: this.textFlipH,
                             value  : 1

apps/presentationeditor/main/app/view/DocumentHolder.js

@@ -2807,6 +2807,7 @@ define([
                             caption: me.textRotate270,
                             value  : 0
                         }).on('click', _.bind(onImgRotate, me)),
+                        { caption: '--' },
                         new Common.UI.MenuItem({
                             caption: me.textFlipH,
                             value  : 1

apps/spreadsheeteditor/main/app/controller/DocumentHolder.js

@@ -1468,6 +1468,8 @@ define([
                 if (!documentHolder.imgMenu || !showMenu && !documentHolder.imgMenu.isVisible()) return;
 
                 isimagemenu = isshapemenu = ischartmenu = false;
+                documentHolder.mnuImgAdvanced.imageInfo = undefined;
+
                 var has_chartprops = false,
                     signGuid;
                 var selectedObjects = this.api.asc_getGraphicObjectProps();

apps/spreadsheeteditor/main/app/view/DocumentHolder.js

@@ -704,6 +704,7 @@ define([
                             type   : 'rotate',
                             value  : 0
                         }),
+                        { caption: '--' },
                         new Common.UI.MenuItem({
                             caption: me.textFlipH,
                             type   : 'flip',