v3 compatibility experiment: uuid 8.3.2 + Node 16/18 matrix

[TsuyoshiUshio]

Summary

• pin uuid from ^13.0.2 to 8.3.2 for CommonJS compatibility experiments
• add Node 16 and Node 18 to azure-pipelines/templates/test.yml matrix
• keep existing Node 20/22/24 jobs

Validation

• npm test (pass locally)
• Node 16 require smoke: require('uuid') works
• Node 18 require smoke: require('uuid') works

Security Note

• npm audit --omit=dev reports GHSA-w5hq-g745-h8pq on uuid < 11.1.1 (moderate)
• this PR is intended to validate compatibility/CI behavior, including whether security gates block this change

[TsuyoshiUshio]

/azp run

[azure-pipelines]

Azure Pipelines failed to run 1 pipeline(s).

[TsuyoshiUshio]

Superseded by #451 (new branch name + fresh commit to force CI rerun).