### Describe the issue with documentation

`BaseOperator` type hints for `retry_delay` and `max_retry_delay` shows `timedelta` only, however the params also accept `float` seconds values.
Also, type hint for `dag` param is missing.
More precise type hints and params descriptions in the docs can help to understand the code behavior easier.

### How to solve the problem

_No response_

### Anything else

_No response_

### Are you willing to submit PR?

- [X] Yes I am willing to submit a PR!

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)

airflow/models/baseoperator.py
dag_run = (
                    session.query(DagRun)
                    .filter(
                        DagRun.dag_id == self.dag_id,
                        DagRun.execution_date == info.logical_date,
                    )
                    .one()
                )
                ti = TaskInstance(self, run_id=dag_run.run_id)
            except NoResultFound:
                
                dr = DagRun(
                    dag_id=self.dag_id,
                    run_id=DagRun.generate_run_id(DagRunType.MANUAL, info.logical_date),
                    run_type=DagRunType.MANUAL,
                    execution_date=info.logical_date,
                    data_interval=info.data_interval,
                )
                ti = TaskInstance(self, run_id=None)
                ti.dag_run = dr
                session.add(dr)
                session.flush()
            ti.run(
                mark_success=mark_success,
                ignore_depends_on_past=ignore_depends_on_past,
                ignore_ti_state=ignore_ti_state,
                test_mode=test_mode,
                session=session,
            )
    def dry_run(self) -> None: