fix: Report all transport errors in a dial attempt

[rose2221]

Description

Currently, when a DNS address resolves to multiple IPs, the transport dials each one, but only the last error is returned, while earlier errors are logged and lost. This causes issues like #5871, where users miss crucial failure details.

This PR aggregates all transport errors from failed dial attempts and returns them, similar to DialError::Transport at the swarm level.

Fixes

Fixes #5878
Fixes #5871

Change checklist

• I have performed a self-review of my own code
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• A changelog entry has been made in the appropriate crates

[dariusc93]

Thanks for the PR. Left some suggestions. Can you bump the minor version to 0.44.0 since this is introducing a breaking change and 0.43 has already been released? :)

[elenaf9]

Thanks @rose2221, this already looks good. Just some nits.

[rose2221]

Thanks @rose2221, this already looks good. Just some nits.

Thanks, @dariusc93 and @elenaf9, for the feedback! I've made the requested updates. Let me know if any further refinements are needed!

[dariusc93]

Could you also bump the crate version in Cargo.toml to 0.44 as well as in the workspace Cargo.toml? :)

[rose2221]

Could you also bump the crate version in Cargo.toml to 0.44 as well as in the workspace Cargo.toml? :)

it's been done!

[elenaf9]

Logic looks good to me. Just a few nits about the test.

[elenaf9]

Sorry for the slow replies, my availability is a bit limited.
Few follow-up comments.

[elenaf9]

Thank you for the follow ups @rose2221.

Last nit, then only formatting and fixing the clippy beta lints is needed.