Fix string-based style prop in chat content area

Co-authored-by: PeterDaveHello <3691490+PeterDaveHello@users.noreply.github.com>

Author: Copilot

src/pages/IndependentPanel/App.jsx

@@ -200,7 +200,7 @@ function App() {
         </div>
         <div className="chat-content">
           {renderContent && currentSession && currentSession.conversationRecords && (
-            <div className="chatgptbox-container" style="height:100%;">
+            <div className="chatgptbox-container" style={{ height: '100%' }}>
               <ConversationCard
                 session={currentSession}
                 notClampSize={true}