fix(chain): backport PR#2240

[LLFourn]

Description

It's a backport for the bdk_chain fix introduced by #2240. If you're interested in the original fix, check the original PR for discussion/rationale.

A tx whose anchors are all in blocks no longer in the best chain falls through to the leftover stage of CanonicalIter, which made it canonical as unconfirmed without checking last_evicted. So a tx that was confirmed, reorged out and then evicted stayed canonical forever.

Notes to the reviewers

This differs from #2240 in one way. #2240 adds TxNode::is_evicted(), but that relies on TxNode::last_evicted, which 0.23 doesn't have. Adding the field would break anyone who constructs TxNode with a struct literal (see the note on TxGraph::get_last_evicted). So this backport does the same last_seen/last_evicted check inline in CanonicalIter, using the existing TxGraph::get_last_evicted, and adds no new API. For the same reason it leaves out #2240's tx_node_is_evicted unit test.

#2240's end-to-end test test_evicted_stale_anchored_tx_not_canonical is ported to test_tx_graph.rs and uses list_canonical_txs, since canonical_view doesn't exist in 0.23. It fails without the fix.

Changelog notice

### Fixed

- Skip evicted transactions during leftover canonicalization, so a transaction anchored only in stale blocks is no longer canonical once it has been evicted.

Checklists

All Submissions:

• I followed the contribution guidelines

[noahjoeris]

ACK c211596

Thanks for the backport.
Unrelated: CI is broken and we need to update pinned deps