Provider name should not hard coded for openaicompat

[fwang2002]

Description

call.ProviderOptions[Name] in the following code, hard coded Name which is always "openai-compat", ignore the name set with WithName.

func PrepareCallFunc(_ fantasy.LanguageModel, params *openaisdk.ChatCompletionNewParams, call fantasy.Call) ([]fantasy.CallWarning, error) {
	providerOptions := &ProviderOptions{}
	if v, ok := call.ProviderOptions[Name]; ok {
		providerOptions, ok = v.(*ProviderOptions)
		if !ok {
			return nil, &fantasy.Error{Title: "invalid argument", Message: "openai-compat provider options should be *openaicompat.ProviderOptions"}
		}
	}
...
}

Version

No response

Environment

No response

[andreynering]

Thank for reporting @fwang2002.

Cnntributions are welcome!