Proposed Changes

This allows clients to send the full intermediate chain during the TLS handshake instead of relying on OS stores or AIA fetches, addressing issue#1864. It improves interoperability when servers don’t have intermediates installed or when environments lack internet access.
Keep behavior unchanged for netstandard2.0; the new API is only compiled for net8.0.
Split Public API “Unshipped” files per TFM and wire them via AdditionalFiles to satisfy the PublicApiAnalyzer for both net8.0 and netstandard2.0.

Types of Changes

What types of changes does your code introduce to this project?
Put anx in the boxes that apply

• Bug fix (non-breaking change which fixes issue #NNNN)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause an observable behavior change in existing systems)
• Documentation improvements (corrections, new content, etc)
• Cosmetic change (whitespace, formatting, etc)

Checklist

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the PR. If you're unsure about any of them, don't hesitate to ask on the
mailing list. We're here to help! This is simply a reminder of what we are
going to look for before merging your code.

• I have read theCONTRIBUTING.md document
• I have signed the CA (seehttps://cla.pivotal.io/sign/rabbitmq)
• All tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)
• Any dependent changes have been merged and published in related repositories

Further Comments

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