OCPBUGS-81630: Fix unnecessary error on Node Terminal tab

Show a loading spinner while the debug pod is being created, instead of
briefly flashing "Debug pod not found or was deleted." The error occurred
because useK8sWatchResource(null) returns loaded=true before pod creation
completes.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: stefanonardo

frontend/packages/console-app/src/components/nodes/NodeTerminal.tsx

@@ -249,11 +249,15 @@ const NodeTerminal: FC<NodeTerminalProps> = ({ obj: node }) => {
     };
   }, [nodeName, isWindows]);
 
-  return errorMessage ? (
-    <NodeTerminalError error={errorMessage} />
-  ) : (
-    <NodeTerminalInner pod={pod} loaded={loaded} loadError={loadError} />
-  );
+  if (errorMessage) {
+    return <NodeTerminalError error={errorMessage} />;
+  }
+
+  if (!podName) {
+    return <LoadingBox />;
+  }
+
+  return <NodeTerminalInner pod={pod} loaded={loaded} loadError={loadError} />;
 };
 
 export default NodeTerminal;