[Bug] Why the example/cpp/llama/llama_triton_example.cc does not call the LlamaTritonModel::createEngine()?

### Checklist

- [X] 1. I have searched related issues but cannot get the expected help.
- [X] 2. The bug has not been fixed in the latest version.
- [X] 3. Please note that if the bug-related issue you submitted lacks corresponding environment info and a minimal reproducible demo, it will be challenging for us to reproduce and resolve the issue, reducing the likelihood of receiving feedback.

### Describe the bug

I try to run the cpp example in the example/cpp/llama/llama_triton_example.cc, and I got a runtime error.Then I figure out that the example did not call LlamaTritonModel::createEngine().

### Reproduction

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### Environment

```Shell
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### Error traceback

```Shell
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