[BUG]: Anthropic Error:invalid_request_error `temperature` is deprecated for this model (Opus 4.8)

### How are you running AnythingLLM? Docker (local) ### What happened? when using Opus 4.8 there's the following error: `Anthropic Error:invalid_request_error `temperature` is deprecated for this model.` ### Are there known steps to reproduce? docker, `chat` mode. tested with `:latest` and `:1.13` ### LLM Provider & Model (if applicable) claude/opus:4.8 ### Embedder Provider & Model (if applicable) _No response_