Add exclusion rules to mondo-excluded-values.yml

[matentzn]

Overview

First suggestion on how I would encode lexical rules for excluding synonyms altogether from synonym sync or externally managed content.

This PR:

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Pre-merge checklist

Documentation

Was the documentation added/updated under docs/?

• [ ] Yes
• [ ] No, updates to the docs were not necessary after careful consideration

QC

Was the full pipeline run before submitting this PR using sh run.sh make build-mondo-ingest on this branch (after docker pull obolibrary/odkfull:dev), and no errors occurred?

• [ ] Yes
• [ ] No, there are no functional (code-related) changes to the pipeline in the PR, so no re-run is necessary

New Packages

Were any new Python packages added?

• [ ] Yes, requirements.txt.full was updated and an ODK issue submitted
• [x] No

Were any other non-Python packages added?

• [ ] Yes, Dockerfile updated and an ODK issue submitted
• [x] No

PR Review and Conversations Resolved

Has the PR been sufficiently reviewed by at least 1 team member of the Mondo Technical team and all threads resolved?

• [ ] Yes