🤖 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

api/package.json

@@ -102,7 +102,6 @@
     "tiktoken": "^1.0.15",
     "traverse": "^0.6.7",
     "ua-parser-js": "^1.0.36",
-    "undici": "^7.2.3",
     "winston": "^3.11.0",
     "winston-daily-rotate-file": "^4.7.1",
     "zod": "^3.22.4"