Support query that don't have ContinuationToken

src/CosmosDbExplorer.Core/Helpers/FeedResponseExtensions.cs

@@ -14,7 +14,7 @@ public static class FeedResponseExtensions
             {
                 return feedResponse.ContinuationToken;
             }
-            catch (ArgumentException ex) when (ex.Message == "Continuation token is not supported for queries with GROUP BY. Do not use FeedResponse.ResponseContinuation or remove the GROUP BY from the query.")
+            catch
             {
                 // Silently catch exception 
                 return null;