Reapply "Add Vertex as an AI provider (#32450)" (#33339)

GitOrigin-RevId: d506c99cf32fae97b6721923256bd980120fbeed

package.json

@@ -140,14 +140,11 @@
     "zod-validation-error": "4.0.1",
     "simple-oauth2": "5.0.0",
     "@types/simple-oauth2": "5.0.7",
-    "@ai-sdk/mcp": "1.0.25",
-    "@ai-sdk/openai": "3.0.41",
     "@node-oauth/oauth2-server": "5.3.0",
     "@phosphor-icons/react": "2.1.7",
     "@slack/webhook": "7.0.2",
     "@stripe/react-stripe-js": "3.9.0",
     "@stripe/stripe-js": "7.7.0",
-    "ai": "6.0.116",
     "cache-flow": "1.9.0",
     "focus-trap-react": "11.0.4",
     "i18next-http-middleware": "3.5.0",
@@ -158,7 +155,6 @@
     "rate-limiter-flexible": "2.4.1",
     "react-hook-form": "7.71.1",
     "stripe": "18.4.0",
-    "@ai-sdk/react": "3.0.118",
     "@babel/plugin-proposal-decorators": "7.28.0",
     "@floating-ui/react": "0.27.16",
     "@juggle/resize-observer": "3.3.1",