CBG-4757: better logging around reconnect for ISGR

[gregns1]

CBG-4757

• Added some debug logging around reconnect
• Added debug logging when we successfully reconnect
• Adds config ID to the error case logging

Open to ideas about anything else that needs adding.

Pre-review checklist

• Removed debug logging (fmt.Print, log.Print, ...)
• Logging sensitive data? Make sure it's tagged (e.g. base.UD(docID), base.MD(dbName))
• Updated relevant information in the API specifications (such as endpoint descriptions, schemas, ...) in docs/api

Dependencies (if applicable)

• Link upstream PRs
• Update Go module dependencies when merged

Integration Tests

• GSI=true,xattrs=true https://jenkins.sgwdev.com/job/SyncGateway-Integration/000/

[Copilot]

Pull Request Overview

Enhances debugging capabilities for ISGR (Inter Sync Gateway Replication) reconnection logic by adding detailed logging around connection attempts. The PR focuses on improving troubleshooting by providing more visibility into reconnection processes and outcomes.

• Added debug logging before reconnection attempts
• Enhanced error logging to include configuration ID for better identification
• Added success logging when reconnection completes successfully