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Deadline reference evaluation should receive the DagRun instead of dag_id/run_id
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### Body
Custom and built-in deadline references are evaluated via `evaluate_with(session=..., interval=..., dag_id=..., run_id=...)` at Dag run creation. The two identifiers exist only so the built-in references can pull the Dag run out of the database, but the caller already has it.
`airflow-core/src/airflow/serialization/definitions/dag.py:764` has a TODO noting this (added in #58248):
```python
# TODO : Pretty sure we can drop these last two; verify after testing is complete
dag_id=self.dag_id,
run_id=orm_dagrun.run_id,
```
`DagRunLogicalDateDeadline` and `DagRunQueuedAtDeadline` pass those straight to `_fetch_from_db` (serialization/definitions/deadline.py:361), which queries `SELECT <column> FROM dag_run WHERE dag_id = ? AND run_id = ?`. That is a query for a column of `orm_dagrun`, which is already loaded in the same session. `AverageRuntimeDeadline` genuinely needs to query historical runs, but it only needs `dag_id`, which is already available as `orm_dagrun.dag_id`.
There is a second symptom. models/taskinstance.py:252 cannot use `evaluate_with()` at all:
```
# We can't use evaluate_with() since the new queued_at is not written to the DB yet.
```
and replicates the deadline recalculation instead. That is the DB-read approach failing where you would expect: the in-memory object is ahead of the database, so the `SELECT` returns stale data. Passing the object directly would let that code path use the normal evaluation logic.
### Proposal
Pass the DagRun (or a small evaluation-context object) into `evaluate_with` instead of loose identifiers:
- Built-in references read attributes directly; `_fetch_from_db` is no longer needed for the two DagRun references
- One fewer query per DagRun-type deadline alert per Dag run creation
- taskinstance.py can use `evaluate_with()` rather than duplicating it
- A context object leaves room to expose more without another signature change
### Consequence for required_kwargs
`required_kwargs` exists solely to declare which …
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