### 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
'_upstream_task_ids',
                    'default_args',
                    'dag',
                    '_dag',
                    '_BaseOperator__instantiated',
                }
                | {
                    '_task_type',
                    'subdag',
                    'ui_color',
                    'ui_fgcolor',
                    'template_ext',
                    'template_fields',
                    'template_fields_renderers',
                    'params',
                }
            )
            DagContext.pop_context_managed_dag()
        return cls.__serialized_fields
    def is_smart_sensor_compatible(self):
        """Return if this operator can use smart service. Default False."""
        return False
    @property
    def inherits_from_dummy_operator(self):
        """Used to determine if an Operator is inherited from DummyOperator"""
        
        
        
        return getattr(self, '_is_dummy', False)
    def defer(