### 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,
        content: Any,
        context: Dict,
        jinja_env: Optional[jinja2.Environment] = None,
        seen_oids: Optional[Set] = None,
    ) -> Any:
        """
        Render a templated string. The content can be a collection holding multiple templated strings and will
        be templated recursively.
        :param content: Content to template. Only strings can be templated (may be inside collection).
        :type content: Any
        :param context: Dict with values to apply on templated content
        :type context: dict
        :param jinja_env: Jinja environment. Can be provided to avoid re-creating Jinja environments during
            recursion.
        :type jinja_env: jinja2.Environment
        :param seen_oids: template fields already rendered (to avoid RecursionError on circular dependencies)
        :type seen_oids: set
        :return: Templated content
        """
        if not jinja_env:
            jinja_env = self.get_template_env()