fix: Prevent template value from overriding user input on tab switch (#5369)

* 🐛 (newChatView.tsx): fix issue where chat value was not being cleared when tab is hidden

* 🔧 (newChatView.tsx): refactor setting chat value to handle additional condition for better logic clarity

src/frontend/src/modals/IOModal/components/chatView/chat-view.tsx

@@ -98,7 +98,7 @@ export default function ChatView({
       return new Date(a.timestamp).getTime() - new Date(b.timestamp).getTime();
     });
 
-    if (messages.length === 0 && !lockChat && chatInputNode) {
+    if (messages.length === 0 && !lockChat && chatInputNode && isTabHidden) {
       setChatValueStore(
         chatInputNode.data.node.template["input_value"].value ?? "",
       );