ChatGoogleVertexAI - Streaming doesn't work for Gemini Models

[vijaykammili]

@HenryHengZJ - It looks like Streaming doesn't work for Gemini Models for ChatGoogleVertexAI node. ChatOpenAI, AzureChatOpenAI and ChatAnthropic, all of them return a stream of tokens in the websocket but not Gemini models. It just returns a JSON response.

[haimco50]

Yep - noticed this long time ago but forgot to report - @HenryHengZJ - it would be great to fix this

[vijaykammili]

Looks like streaming is working with 2.2.2 version.