Add checks for study metadata in rt and seg panels + bump dcmjs to fix circular references issues naturalizing datasets (#2588)

Co-authored-by: Davide Punzo <punzodavide@hotmail.it>

platform/ui/src/contextProviders/SnackbarProvider.js

@@ -41,7 +41,7 @@ const SnackbarProvider = ({ children, service }) => {
     LogManager.subscribe(LogManager.EVENTS.OnLog, onLogHandler);
 
     return () => {
-      LogManager.subscribe(LogManager.EVENTS.OnLog, onLogHandler);
+      LogManager.unsubscribe(LogManager.EVENTS.OnLog, onLogHandler);
     };
   }, [show]);