support for azureADTokenProvider in AzureChatOpenAI

[ladrians]

Checked other resources

• I added a very descriptive title to this issue.
• I searched the LangChain.js documentation with the integrated search.
• I used the GitHub search to find a similar question and didn't find it.
• I am sure that this is a bug in LangChain.js rather than my code.
• The bug is not resolved by updating to the latest stable version of LangChain (or the specific integration package).

Example Code

Is there a chance to start supporting the azureADTokenProvider value?
Based on this update for v4.41.1 it is available to be used with the AzureOpenAI class.

Error Message and Stack Trace (if applicable)

Not specified, the element is not present to be used.

Description

The request is to add support for the azureADTokenProvider value provided by AzureChatOpenAI; this example from Ms doc on how to use it, it is python but just as an exaple on its usage.

System Info

langchain: 0.1.37

[ladrians]

Just for reference this is the new configuration needed for the js counterpart.

[jacoblee93]

CC @sarangan12 I think your last PR added this?

[jacoblee93]

I believe this was added in latest, please reopen if not!