Helm Chart: dag_bundle_config_list changes roll every Airflow component, even though only the dag-processor consumes the value

# Apache Airflow version 3.1.x (chart `1.18.x`, current `main`) # What happened? The Airflow Helm chart stores `config.dag_processor.dag_bundle_config_list` inside the global `airflow.cfg` ConfigMap (`<release>-config`). Every long-running Airflow workload (scheduler, api-server, worker, triggerer, dag-processor, flower) carries a `checksum/airflow-config` pod annotation computed as `sha256sum` of that ConfigMap. Any time the bundle list changes — most commonly a `tracking_ref` bump emitted by a CI pipeline that promotes a new DAG version into the `GitDagBundle` configuration — the checksum flips and **every** component pod is rolled. In our environment a routine `helm upgrade` from a CI job tears down the scheduler, the api-server, all Celery workers, and the triggerer purely to refresh a value that only the dag-processor actually re-reads. This is a production-relevant restart blast radius: in-flight Celery tasks are interrupted, the api-server returns 503 for the duration of the rollout, and any DAG run boundary that lands in the rollout window is delayed. # What you think should happen instead? Mutations of `dag_bundle_config_list` should only roll the dag-processor. All other Airflow components either do not consume the value at runtime (api-server, flower) or only consume it lazily on bundle access with a per-task version pin (scheduler, worker, triggerer), so a `tracking_ref` change is functionally a no-op for them until they next refresh. We see strong precedent for "do not annotate a workload with a checksum it does not depend on" in **#63204 "Remove JWT secrets from triggerer, worker and dag-processor"**, which removed `checksum/jwt-secret` annotations from workloads that do not need the JWT secret. The exact same principle applies here. # Why is only the dag-processor a true consumer? We traced the runtime behavior in the current `main` branch: 1. **dag-processor** — the only process that actively re-reads `dag_bundle_config_list` from `airflow.cfg`, inst…