### 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
self._downstream_task_ids: Set[str] = set()
        self._dag = None
        self.dag = dag or DagContext.get_current_dag()
        
        
        from airflow.models.dag import DAG
        self.subdag: Optional[DAG] = None
        self._log = logging.getLogger("airflow.task.operators")
        
        self.inlets: List = []
        self.outlets: List = []
        self._inlets: List = []
        self._outlets: List = []
        if inlets:
            self._inlets = (
                inlets
                if isinstance(inlets, list)
                else [
                    inlets,
                ]
            )
        if outlets:
            self._outlets = (
                outlets
                if isinstance(outlets, list)
                else [
                    outlets,
                ]
            )
    def __eq__(self, other):