PFA patch to fix the issue where "Dialog Help" was broken in case where query tool/Debugger opens in new browser tab.
RM#2310
Note:
Object help might not work as well when used in new browser tab but for that we might need to find a way to pass node & server information in new browser tab so that we can able to create proper url for given/selected object which requires some time and fortunately we not using Object help button in query tool or debugger at present, meanwhile this patch will fix the issue for dialog help button only.