fix: unique bundle file (CT-000)

[DecathectZero]

S3/Cloudfront seems to be caching the files, since they are all the same name: index.html and bundle.mjs
This makes it hard to propagate updates/bug fixes.

The problem with this is that after publication to the CDN the older file is no longer available and could lead to a "chunk not found" error that we've seen before on creator-app.

Ideally, I'd like to find a way to force new versions when released.

Even if the JS file is updated, the index.html that the iframe calls is still cached, and referencing an older JS file.
I vague remember methods to use a query param ?dsdsd..... to overwrite it. But that defeats the purpose of a CDN if we are going to generate a new query every time.

react-chat/packages/widget/.env.production

Line 3 in 017e7c3

VITE_WIDGET_URL='https://cdn.voiceflow.com/react-chat/index.html'

Maybe the best way is to pass in a build key env var.
That still won't stop the code/pasted code snippet from being cached.

It seems to cache for up to 24 hours:
https://aws.amazon.com/premiumsupport/knowledge-center/cloudfront-serving-outdated-content-s3/