Worker creation fails when `top_k` is passed as a float

[a-priestley]

Using the Home Assistant integration "Local LLMs", and configuring rkllama as an ollama backend for the voice assistant conversation agent (so stt and tts not relevant here).

When the model has not been loaded manually, use the "assist" functionality to send a prompt to the backend triggering the worker creation in rkllama, but creation fails.

Client exception message:

Sorry, there was a problem talking to the backend: HomeAssistantError("Failed to communicate with the API! Failed to load model 'home-llama-3.2:3b': Unexpected Error loading the model home-llama-3.2:3b into memory. Check the file .rkllm is not corrupted, properties in Modelfile (like Context Length allowed by the model) and resources available in the server (status code: 500)")

Rkllama exception message:

rkllama.worker - ERROR - Failed creating the worker for model 'home-llama-3.2:3b': invalid literal for int() with base 10: '20.0'

Even though the value being passed has no decimal value, it is not being parsed as an integer. As a simple workaround I have just changed the type to float:
a-priestley@56700d7