node: Skip unreadable address rows in entries()

- Decode each row independently so one corrupt entry no longer aborts
  the whole address-book iterator
- Log a warn with the raw `value` and continue past parse failures
- Add a regression test that mimics the post-migration-8 state where a
  legacy `[]:8776` row lands as `type='ipv6'`

A pre-`df8e4e6c` parser admitted `[]:8776` as `HostName::Dns("[]")`.
Migration 8 retyped any `[..]:N` dns row to `ipv6` without validating
the inner part, so on read `Address::from_str` rejects the row with
"invalid IPv6 address syntax", which bubbled up and caused
`available_peers()` to silently return empty, breaking peer discovery
for the affected node.

CHANGELOG.md

@@ -50,6 +50,14 @@ COB type names and payload IDs remain unchanged for backwards compatibility.
   with your favorite text editor (e.g. via `rad config edit`), or specialized
   tools like `jq`.
 
+## Fixed Bugs
+
+- Skip node address entries that cannot be parsed from an SQLite row into a
+  valid address entry. This improves the node service, when it checks available
+  peers. Previously, if it found a row it could not parse, then it would fail
+  the whole process. Now, it will continue, providing valid entries to connect
+  to.
+
 ## 1.8.0
 
 ## New Features