Name space development ENV. Don't use `process.env.LOCAL` if you want this library to work.

[izakfilmalter]

Just ran into an issue that was super annoying. My app has process.env.LOCAL, and so does this lib. I think library env should have some name spacing, eg process.env.STREAM_JS_LOCAL. This caused a really annoying and hard to track down issue where I would just get [SiteError] with no message from the API.

stream-js/src/client.ts

Line 366 in bffb182

if ((typeof process !== 'undefined' && process.env?.LOCAL) || this.options.local)