WebHitTestResult: Fix isContentSelected

Was returning always true on right click

src/lib/webengine/webhittestresult.cpp

@@ -40,12 +40,18 @@ WebHitTestResult::WebHitTestResult(const WebPage *page, const QPoint &pos)
                           "        return e.getAttribute('readonly') != 'readonly';"
                           "    return false;"
                           "}"
+                          "function isSelected(e) {"
+                          "    var selection = window.getSelection();"
+                          "    if (selection.type != 'Range')"
+                          "        return false;"
+                          "    return window.getSelection().containsNode(e, true);"
+                          "}"
                           "var res = {"
                           "    alternateText: e.getAttribute('alt'),"
                           "    boundingRect: '',"
                           "    imageUrl: '',"
                           "    contentEditable: isEditableElement(e),"
-                          "    contentSelected: window.getSelection().containsNode(e, true),"
+                          "    contentSelected: isSelected(e),"
                           "    linkTitle: '',"
                           "    linkUrl: '',"
                           "    mediaUrl: '',"