fix: remove duplicate workspace activation flag

Reviewed-on: #30

src/features/workbench/WorkbenchPage.tsx

@@ -522,7 +522,6 @@ function WorkbenchPage({
     [conversations],
   );
   const hasSidebarRecords = conversationRecords.length > 0;
-  const hasActivatedWorkspace = workspaceStarted || isGenerating || hasConversationRecords;
 
   const activeConversationTitle = useMemo(() => {
     if (!activeConversationId) return "";