Remove redundant comments in ActivityExecutionsTab.razor.cs

Eliminated unnecessary comments regarding the checking and periodic refreshing of selected item details. This change improves code readability and maintains the focus on the essential logic.

src/modules/Elsa.Studio.Workflows/Components/WorkflowInstanceViewer/Components/ActivityExecutionsTab.razor.cs

@@ -90,12 +90,9 @@ private async Task OnActivityExecutionClicked(TableRowClickEventArgs<ActivityExe
         if (SelectedItem == null)
             return;
 
-        // Check if the selected item has all of its details or not.
-        // If not, periodically check for the details until they are available.
         if (SelectedItem.IsFused())
             return;
 
-        // Start a timer to periodically check for the details.
         RefreshSelectedItemPeriodically(id);
     }