fix(ibm-api-symmetry): maintain paths when resolving reference schemas

[dpopp07]

PR summary

The ibm-api-symmetry code is losing track of the path to the canonical schema when "reference" schemas are resolved during processing, leading to false positives. This resolves the issue.

PR Checklist

General checklist

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• [x] The commit message follows the Angular Commit Message Guidelines.
• [x] Tests for the changes have been added (for bug fixes / features)