🤖 fix: GoogleClient Context Handling & GenAI Parameters (#5503)

* fix: remove legacy code for GoogleClient and fix model parameters for GenAI

* refactor: streamline client init logic

* refactor: remove legacy vertex clients, WIP remote vertex token count

* refactor: enhance GoogleClient with improved type definitions and streamline token count method

* refactor: remove unused methods and consolidate methods

* refactor: remove examples

* refactor: improve input handling logic in DynamicInput component

* refactor: enhance GoogleClient with token usage tracking and context handling improvements

* refactor: update GoogleClient to support 'learnlm' model and streamline model checks

* refactor: remove unused text model handling in GoogleClient

* refactor: record token usage for GoogleClient titles and handle edge cases

* chore: remove unused undici, addresses verbose version warning

Author: danny-avila

api/app/clients/ChatGPTClient.js

@@ -13,7 +13,6 @@ const {
 const { extractBaseURL, constructAzureURL, genAzureChatCompletion } = require('~/utils');
 const { createContextHandlers } = require('./prompts');
 const { createCoherePayload } = require('./llm');
-const { Agent, ProxyAgent } = require('undici');
 const BaseClient = require('./BaseClient');
 const { logger } = require('~/config');
 
@@ -186,10 +185,6 @@ class ChatGPTClient extends BaseClient {
       headers: {
         'Content-Type': 'application/json',
       },
-      dispatcher: new Agent({
-        bodyTimeout: 0,
-        headersTimeout: 0,
-      }),
     };
 
     if (this.isVisionModel) {
@@ -275,10 +270,6 @@ class ChatGPTClient extends BaseClient {
       opts.headers['X-Title'] = 'LibreChat';
     }
 
-    if (this.options.proxy) {
-      opts.dispatcher = new ProxyAgent(this.options.proxy);
-    }
-
     /* hacky fixes for Mistral AI API:
       - Re-orders system message to the top of the messages payload, as not allowed anywhere else
       - If there is only one message and it's a system message, change the role to user