Resolve "Report only new inconsistencies"

What does this MR do and why?

When a new schema inconsistency is found, we create a new GitLab Issue with the schema inconsistency description.
Example: #408040 (closed)

If the schema inconsistency is already tracked in the system, we only create a new issue if the issue is not opened.
Example: If the GitLab issue is closed, we will generate a new GitLab issue.

Screenshots or screen recordings

Screenshots are required for UI changes, and strongly recommended for all other merge requests.

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Related to #411428 (closed)