Further work on standalone WASM environments

[guardrex]

Fixes #36371

Marek ...

• I didn't have the cross-link to our reference content in the Environments article in the What's New article, so I'm adding that cross-link on this PR.
• I'm adding content on a few ways that a dev can control the value. These are common approaches for this sort of task, so I'm not testing them all. I'm 👂 if you have any concerns.
• I'm adding a bit on using a web API endpoint that the WASM app can hit. Should we show some startup JS code that would make that work? ... or is it best to just consider it an 'advanced scenario' for the dev to work out on their own?

---

Internal previews

📄 File	🔗 Preview link
aspnetcore/blazor/fundamentals/environments.md	aspnetcore/blazor/fundamentals/environments

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

[maraf]

I'm adding content on a few ways that a dev can control the value. These are common approaches for this sort of task, so I'm not testing them all. I'm 👂 if you have any concerns.

It looks good to me

I'm adding a bit on using a web API endpoint that the WASM app can hit. Should we show some startup JS code that would make that work? ... or is it best to just consider it an 'advanced scenario' for the dev to work out on their own?

I think it's fine leaving it as an advanced scenario module the comment below

Otherwise, it looks great! Thank you