Launcher has been unable to complete initialization

Hello, I tried to run the mpi-operator/examples/v1/horovod/tensorflow-mnist-elastic.yaml case, and found that the launcher has been unable to complete the Init, the log shows the following

# kubectl get pods -o wide -n mpi-operator
```
tensorflow-mnist-elastic-launcher 0/1 Init:0/1 0 6m11s
tensorflow-mnist-elastic-worker-0 1/1 Running 0 6m11s
tensorflow-mnist-elastic-worker-1 1/1 Running 0 6m11s
```

# kubectl logs tensorflow-mnist-elastic-launcher -n mpi-operator
```
Error from server (BadRequest): container "mpi-launcher" in pod "tensorflow-mnist-elastic-launcher" is waiting to start: PodInitializing
```

How can I troubleshoot or solve

The reproduction is mpi-operator/examples/v1/horovod/tensorflow-mnist-elastic.yaml; start by running it and inspecting the launcher's init container status and pod events with kubectl. Trace why the launcher remains at Init:0/1 while workers run, then verify the example reaches initialization and document the troubleshooting steps or fix.

Written by the indexing model from the issue text.