refactor: Adapt to new UnorderedRecvStream in iroh-quinn

[rklaehn]

Description

Adapt to changes made to iroh-quinn in n0-computer/quinn#257

Breaking Changes

endpoint::RecvStream::read_chunk: ordering: bool removed.

To read unordered chunks, you now have to create an UnorderedRecvStream. read_chunk on RecvStream is always ordered.

Notes & open questions

Change checklist

• Self-review.
• Documentation updates following the style guide, if relevant.
• Tests if relevant.
• All breaking changes documented.
  • List all breaking changes in the above "Breaking Changes" section.
  • Open an issue or PR on any number0 repos that are affected by this breaking change. Give guidance on how the updates should be handled or do the actual updates themselves. The major ones are:
    • quic-rpc
    • iroh-gossip
    • iroh-blobs
    • dumbpipe
    • sendme

[github-actions]

Documentation for this PR has been generated and is available at: https://n0-computer.github.io/iroh/pr/3776/docs/iroh/

Last updated: 2025-12-15T17:58:18Z

[flub]

Breaking Changes

endpoint::RecvStream::read_chunk: ordering: bool removed

Please explain how to do this instead to make writing the release notes a bit easier.

I think we also need this type to be nameable, so it needs to be re-exported by iroh::endpoint. Which will create a conflict with #3757.

[dignifiedquire]

merged this for now to unblock things, @ramfox please take a look when you rebase/merge to include this in your changes