[Bug] flutter 跟安卓原生交互，调用engine.chatCompletion 就会发生anr

[tdd102]

🐛 Bug

To Reproduce

Steps to reproduce the behavior:

Expected behavior

Environment

• Platform (e.g. WebGPU/Vulkan/IOS/Android/CUDA):
• Operating system (e.g. Ubuntu/Windows/MacOS/...):
• Device (e.g. iPhone 12 Pro, PC+RTX 3090, ...)
• How you installed MLC-LLM (conda, source):
• How you installed TVM-Unity (pip, source):
• Python version (e.g. 3.10):
• GPU driver version (if applicable):
• CUDA/cuDNN version (if applicable):
• TVM Unity Hash Tag (python -c "import tvm; print('\n'.join(f'{k}: {v}' for k, v in tvm.support.libinfo().items()))", applicable if you compile models):
• Any other relevant information:

Additional context