Problems with `vercelAiIntegration` for `ai` package on Next.js

[AbhiPrasad]

There are a few problems with the vercelAiIntegration on Next.js. We made some improvements already (and/or they are pending):

• feat(node): Automatically enable vercelAiIntegration when ai module is detected #16565
• feat(node): Ensure modulesIntegration works in more environments #16566
• feat(node): Allow to force activate vercelAiIntegration #16551
• feat(nextjs): Ensure all packages we auto-instrument are externalized #16552

Once all of this landed, we've done everything we can do in the SDK itself. That leaves the problem that we cannot monkey- ai on Next.js, for whatever reason. This PR may fix this: vercel/ai#6716 in the ai package, but this is still WIP and unclear when/how this lands.

For the time being, once all the linked PRs in the SDK are merged & released, stuff should work, if users manually enable telemetry in every call:

await generateText({
  experimental_telemetry: { isEnabled: true },
  // ...
});

We should probably inform users in the AI insights module that are using Next.js about this, somehow.