Disable live route with temporary message

Updated the '/live' route to display a temporary disabled message.

Author: msaroufim

frontend/src/App.tsx

@@ -76,7 +76,7 @@ function App() {
             <Route path="/working-groups" element={<WorkingGroups />} />
             <Route path="/events" element={<Lectures />} />
             <Route path="/lectures" element={<Lectures />} />
-            <Route path="/live" element={<Live />} />
+            <Route path="/live" element={<div>Live temporarily disabled</div>} />
             <Route path="/login" element={<Login />} />
             {/* error handling page */}
             {errorRoutes.map(({ path, code, title, description }) => (