Add needed env var for app insights

[pamelafox]

Purpose

Fixes #2023
per documentation @ https://learn.microsoft.com/en-us/azure/azure-monitor/app/codeless-app-service?tabs=python#automate-monitoring

How it looks in Portal before deployed:

How it looks in Portal once deployed:

Does this introduce a breaking change?

When developers merge from main and run the server, azd up, or azd deploy, will this produce an error?
If you're not sure, try it out on an old environment.

[ ] Yes
[X] No

Does this require changes to learn.microsoft.com docs?

This repository is referenced by this tutorial
which includes deployment, settings and usage instructions. If text or screenshot need to change in the tutorial,
check the box below and notify the tutorial author. A Microsoft employee can do this for you if you're an external contributor.

[ ] Yes
[X] No

Type of change

[X] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[ ] Other... Please describe:

Code quality checklist

See CONTRIBUTING.md for more details.

N/A

[pamelafox]

I can't get this to deploy successfully, it keeps having Python import issues. I wonder if it brings in more packages when you enable this.

[pamelafox]

I'm going to close for now, since I couldn't get this to work successfully, and we now default to ACA.