Function isVendorAiChatModelName

isVendorAiChatModelName(
    modelName: unknown,
): modelName is
    | "gpt-5-mini"
    | "gpt-5-nano"
    | "gpt-5.2"
    | "gpt-5.2-pro"
    | "gemini-3-pro"
    | "gemini-3-flash"
    | "grok-4"
    | "grok-4-1-fast-reasoning"
    | "grok-4-1-fast-non-reasoning"
    | "claude-haiku-4-5-20251001"
    | "claude-opus-4-5-20251101"
    | "claude-sonnet-4-5-20250929"
Checks if the given model name is a global AI chat model name.
Parameters
- modelName: unknown
Returns modelName is
    | "gpt-5-mini"
    | "gpt-5-nano"
    | "gpt-5.2"
    | "gpt-5.2-pro"
    | "gemini-3-pro"
    | "gemini-3-flash"
    | "grok-4"
    | "grok-4-1-fast-reasoning"
    | "grok-4-1-fast-non-reasoning"
    | "claude-haiku-4-5-20251001"
    | "claude-opus-4-5-20251101"
    | "claude-sonnet-4-5-20250929"