Properly support net 8

When I try to use "ASP.NET Core App to AWS Elasticbeanstalk on Linux" to deploy my web site, it show s a warning:

_Using self-contained publish since AWS Elastic Beanstalk does not currently have .NET 8 preinstalled_

My application then fails to run because (for whatever reason), it appears that publishing my self-contained app is not supported.

I get an error about "Bad Image Format" and "can't load libhostpolicy.so".

I can find AMIs that DO have net8 pre-installed, so why won't the tools support them?

**Describe the solution you'd like**
Support ASP.NET 8 projects without the workaround of 'self-contained' publishing

Start by reproducing the ASP.NET 8 deployment through “ASP.NET Core App to AWS Elastic Beanstalk on Linux” and trace where the toolkit selects self-contained publishing. Check the deployment against a Linux AMI with .NET 8 preinstalled. Done means ASP.NET 8 projects deploy without the warning or the libhostpolicy.so/Bad Image Format failure.

Written by the indexing model from the issue text.