[ANCM] [in proc] Write pre-main errors to the browser when running in development

[shirhatti]

Epic #8833

For pre-main errors, in addition to writing to the event log, surface these errors in the browser when running in a development environment.

[analogrelay]

"Pre-main" meaning errors that occur prior to even loading the application.

[analogrelay]

As part of this, we should follow up with the CTI test scripts that deploy to Azure App Service and have them set ASPNETCORE_ENVIRONMENT to Development when deploying, or if we have a variable to directly control showing detailed errors, use that instead. We've gotten a few errors from those tests that just report as ANCM 500.30 errors with no context. It seems reasonable for them to enable detailed errors in their tests (unless they are directly testing the undetailed errors)