🧪 test: Add more cases in test_json_schema

[tomy0000000]

Change Summary

Adding more tests in test_json_schema.py

Checklist

• The pull request title is a good summary of the changes - it will be used in the changelog
• Unit tests for the changes exist
• Tests pass on CI
• Documentation reflects the changes where applicable
• My PR is ready to review, please add a comment including the phrase "please review" to assign reviewers

[codspeed-hq]

CodSpeed Performance Report

Merging #9457 will not alter performance

_{Comparing tomy0000000:json-schema-tests (bbb958a) with main (46a0565)}

Summary

✅ 13 untouched benchmarks

[sydney-runkle]

Great, thanks!