[19.0] [MIG] queue_job_batch: migrate + tests

[tishmen]

Scope

• queue_job_batch, test_queue_job_batch

Depends on

• [ ] https://github.com/OCA/queue/pull/840

Summary

• Migrate to Odoo 19; tests included. No functional changes beyond compatibility.

Temporary references

• test-requirements.txt adds temporary dependencies to the base PR for CI/runboat. This will be removed once the base PR merges.

Pre-commit

• Ran locally; auto-fixes committed.

Tests

• CI will run the suite using the referenced base PR. Local isolated runs may skip test_queue_job_batch when queue_job/test_queue_job are not present.