Update/Fix: fix-70296-cloudbatch

[saitejabandaru-in]

Automated Pull Request to address fix-70296-cloudbatch. Please review.

[amoghrajesh]

rigger_dagrun.py carries the same stale commit from #70769, run_after isn't a template field, #70490 already handled logical_date and deliberately left run_after alone. drop that commit.

cloud_batch.py - good catch on protobuf vs Jinja, but render_template_fields() only runs at execute time on a worker, not during dag parsing/serialization. so a raw Job would now serialize as a stringified repr instead of a dict. Cannot proceed in current state.

[amoghrajesh]

Please follow contributing guidelines of the repo and do not use AI carelessly.

[saitejabandaru-in]

I sincerely apologize for the automated pull request. It was triggered by an experimental agent framework testing open source contribution pipelines, and I completely missed that it violated the DCO and AI contribution guidelines for this repository. I am closing this PR immediately and have disabled the automation. Thank you for your patience and sorry for the noise!