Streamlined DummyGrid to behave like Grid.
Fixed a bad practice issue with ActiveFragmentSummary that displayed an error message in the webbrowser devtool console.
Fix#3669 - Query the "activegrid" at each re-rerendering of the Stanek Page. Rather than using React useState and passing it as Props.
Tested with :
ns.clearLog()
ns.tail()
await ns.sleep(2000)
ns.print("Clearing gift")
await ns.sleep(1000);
ns.stanek.clearGift()