Describe the bug
States that the contextwindow is 1024, which is wrong.

LLM {
  model: 'deepseek-chat',
  temperature: 0.1,
  topP: 1,
  maxTokens: undefined,
  contextWindow: 1024,
  tokenizer: 'cl100k_base',
  structuredOutput: true
}

To Reproduce
Initialize deepseek llm and log the metadata

  Settings.llm = new DeepSeekLLM({
    apiKey: config.deepSeekApiKey,
    model: "deepseek-chat",
    timeout: 30000, // 30 second timeout
    maxRetries: 2,
    temperature: 0.1, 
  });
  
  console.log(Settings.llm.metadata);

Expected behavior
Should be 64k.

• OS: [e.g. macOS, Linux]
• JS Runtime / Framework / Bundler (select all applicable)
• Node.js
• Deno
• Bun
• Next.js
• ESBuild
• Rollup
• Webpack
• Turbopack
• Vite
• Waku
• Edge Runtime
• AWS Lambda
• Cloudflare Worker
• Others (please elaborate on this)
• Version [e.g. 22]

Additional context
Add any other context about the problem here.