[Pipe] Reduce AirGap sink reconnect log noise

[Caideyipi]

Description

Backport #18243 to dev/1.3.

Adapted the change to the 1.3 code structure while preserving its behavior:

• periodically reduce duplicate reconnect logs;
• log root causes without repeated stack traces;
• lower successful AirGap connections from info to debug;
• report the target endpoint instead of the full socket state.

Tests

• mvn spotless:apply -pl iotdb-core/node-commons
• mvn test -pl iotdb-core/node-commons -Dtest=PipeLoggerTest

This PR has:

• been self-reviewed.
• added unit tests to cover the changed logging behavior.