feat: Show connected robots finished with unit test 94% coverage

ref: N25B-142

src/pages/ConnectedRobots/ConnectedRobots.tsx

@@ -3,6 +3,9 @@ import { useEffect, useState } from 'react'
 export default function ConnectedRobots() {
   
   const [connected, setConnected] = useState<boolean | null>(null);
+
+  
+
   useEffect(() => {
     // We're excepting a stream of data like that looks like this: `data = False` or `data = True`
     const eventSource = new EventSource("http://localhost:8000/robot/ping_stream");
@@ -33,6 +36,9 @@ export default function ConnectedRobots() {
       <h1>Is robot currently connected?</h1>
       <div>
         <h2>Robot is currently: {connected == null ? "checking..." : (connected ? "connected! 🟢" : "not connected... 🔴")} </h2>
+        <h3>
+          {connected == null ? "If checking continues, make sure CB is properly loaded with robot at least once." : ""}
+        </h3>
       </div>
     </div>
   );