`has_child` in preview container actually returns DOMNode

[firedotguy]

# src/rove/core/preview_container.py
def has_child(self, selector: str) -> DOMNode | None:
        """
        Check for whether this element contains this selector or not
        Args:
            selector(str): the selector to test

        Returns:
            bool: whether the selector is valid
        """
        try:
            return self.query_one(selector)
        except NoMatches:
            return None

Return type is DOMNode | None.
But why docs says return type is bool?
And why does it called has_child if it returns element?

[NSPC911]

uhhhhhh
i blame you for looking into the code

it used to actually do what the function is named, check whether the child exists, but I decided it's better if I just use the widget that it queries, hence the docstring wasn't updated

the commit in question: 7ecaf73