Fix: port forwarding in VS Code

[lalver1]

Closes #2642

This PR changes the behavior of the dev container to only auto forward the ports associated with the docs and server services in the compose file. By setting "otherPortsAttributes": { "onAutoForward": "ignore" }, any other ports should not be auto-forwarded at all.

Reviewing

1. Exit your current dev container
2. Switch to this branch
3. Rebuild and reopen the dev container
4. Start the debugger
5. Verify that the app is always reachable from your browser at localhost:DJANGO_LOCAL_PORT/ (open the benefits app, submit the eligibility form, navigate to the admin, etc.) and that the PORTS tab in VS Code always only shows 2 ports, the server and docs ports

[github-actions]

Coverage report

This PR does not seem to contain any modification to coverable code.

[thekaveman]

I'm still not quite sure about the underlying issue here. I've never experienced the situation described in #2642, and it doesn't seem straightforwardly reproducible (e.g. does it happen that way every single time going through an Agency Card flow?)

In any case, on Linux at least, this change appears to have no effect. I'm still seeing all the various ports on the ports tab:

[machikoyasuda]

I tested this locally on my macOS.

My ports tab looks like this:

I am able to access the server and healthcheck:

And the docs: http://localhost:8001/benefits/

But not the Benefits client app at http://localhost:11369/ after running the debugger. Am I mising something?