Skip tests for draft pull requests

[jose-acosta-git]

Summary

• Skip PR-triggered test/CI jobs while the pull request is still a draft.
• Add ready_for_review to PR triggers so tests run when a draft PR is marked ready.
• Keep non-PR triggers such as workflow_dispatch, push, schedules, and post-merge closed handling intact where present.

Validation

• Ran git diff --check for the changed workflow files.
• Parsed changed workflow YAML files with PyYAML.
• Did not run repository test suites locally because these changes only update GitHub Actions workflow conditions.