groq[patch]: Support generic messages in messageToGroqRole

[grace0950]

Description

This PR adds support for handling generic message types in the messageToGroqRole function within libs/langchain-groq/src/chat_models.ts.

Previously, the Groq integration did not properly handle messages of type generic, which could result in runtime errors.
This update introduces a new helper function extractGenericMessageCustomRole to correctly map these messages.

🛠️ Changes

• Added extractGenericMessageCustomRole function to handle ChatMessage with generic type.
• Updated messageToGroqRole to properly support generic messages.

📢 Notes

• This change is backward compatible.
• No external dependencies were introduced.
• No changes to yarn.lock or workspace configurations.

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[benjamincburns]

Hi @grace0950. Thanks for the contribution. In order to merge this you'll need to fix the formatting issue by running yarn format.

I'm also wondering, are you using generic messages? if so, for what purpose?

[grace0950]

Hi @grace0950. Thanks for the contribution. In order to merge this you'll need to fix the formatting issue by running yarn format.

I'm also wondering, are you using generic messages? if so, for what purpose?

@benjamincburns Hi! Thanks for the review.

• I have already run yarn format locally and ensured there are no formatting issues now.

Regarding your question:
Yes, we are using generic messages in our application.
Specifically, we create previous conversation history manually by instantiating new ChatMessage objects, where we directly provide the content and role.
In this case, the message type will be generic, which is why we need proper support for handling it.

Please let me know if there’s anything else I should update!

[benjamincburns]

Suggested change

	console.warn(`Unknown message role: ${message.role}`);
	throw new Error(
	`Unsupported message role: ${message.role}. Expected "system", "assistant", "user", or "function"`
	);