NIFI-16215 Include current transaction enqueues in connection status events

[boguszj]

Summary

NIFI-16215

Moving connection status events reporting after queue updates, so that current transaction enqueues are included in the events.

Tracking

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Issue Tracking

• Apache NiFi Jira issue created

Pull Request Tracking

• Pull Request title starts with Apache NiFi Jira issue number, such as NIFI-00000
• Pull Request commit message starts with Apache NiFi Jira issue number, as such NIFI-00000
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Build

• Build completed using ./mvnw clean install -P contrib-check
  • JDK 21
  • JDK 25

[exceptionfactory]

Thanks for finding and addressing this issue @boguszj!