This PR resolves an SQLAlchemy warning in the migration by correctly setting the alias_id column as part of the primary key in the dag_schedule_dataset_alias_reference table. Previously, only dag_id was marked as the primary key, causing a mismatch with the local definition, which triggered an SAWarning. (#43425)

Example: https://github.com/apache/airflow/actions/runs/11526187767/job/32090094094?pr=43243#step:6:745

When running a migration you see this. It was missed in #41264:
```
/opt/airflow/airflow/migrations/versions/0026_2_10_0_dag_schedule_dataset_alias_reference.py:46 SAWarning:
Table 'dag_schedule_dataset_alias_reference' specifies columns 'dag_id' as primary_key=True, not matching locally specified columns 'alias_id', 'dag_id'; setting the current primary key columns to 'alias_id', 'dag_id'.
This warning may become an exception in a future release
```

It is already a primary key in models:

https://github.com/apache/airflow/blob/e9192f5db32e453f150c73ad31287d4953e3c43d/airflow/models/asset.py#L290-L291

Kaxil verified that both columns are marked as primary keys already in 2.10.

(cherry picked from commit 72947cb)

Author: Lee-W

airflow/migrations/versions/0151_2_10_0_dag_schedule_dataset_alias_reference.py

@@ -45,7 +45,7 @@ def upgrade():
     """Add dag_schedule_dataset_alias_reference table."""
     op.create_table(
         "dag_schedule_dataset_alias_reference",
-        sa.Column("alias_id", sa.Integer(), nullable=False),
+        sa.Column("alias_id", sa.Integer(), primary_key=True, nullable=False),
         sa.Column("dag_id", StringID(), primary_key=True, nullable=False),
         sa.Column("created_at", airflow.utils.sqlalchemy.UtcDateTime(timezone=True), nullable=False),
         sa.Column("updated_at", airflow.utils.sqlalchemy.UtcDateTime(timezone=True), nullable=False),

docs/apache-airflow/img/airflow_erd.sha256

@@ -1 +1 @@
-3009a8ae271c281d59ada514c7181f1be4f0e2c6ba37148d4d5bf57502edf1d1
+f240c081c0e69e9c213b887cab50dc1b61e4a71010fcc2f177ab9e22adef229f