NIFI-15870 Improve error message for enabled controller service refer…

[venkateshwaracholan]

Improved controller service reference error messages for parameter updates and removals
Replaced StandardControllerServiceNode object rendering with structured controller service details
Added concise state guidance indicating the controller service must be DISABLED

Summary

NIFI-15870

Tracking

Please complete the following tracking steps prior to pull request creation.

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
• Pull request contains commits signed with a registered key indicating Verified status

Pull Request Formatting

• Pull Request based on current revision of the main branch
• Pull Request refers to a feature branch with one commit containing changes

Verification

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Build

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

Licensing

• New dependencies are compatible with the Apache License 2.0 according to the License Policy
• New dependencies are documented in applicable LICENSE and NOTICE files

Documentation

• Documentation formatting appears as expected in rendered files

[exceptionfactory]

Thanks for attempting to address this Jira issue @venkateshwaracholan.

This Jira issue should have been closed following the original pull request.

In general, submitting a new pull request for a Jira issue with a previous pull request should include coordinating with the current assignee, or asking a question for direction, rather than proceeding to submit a new PR.

Based on this status, I am closing this PR.