Docparams does not recognize class docstring when placed in __init__

Bug description

The documentation states that "Constructor parameters can be documented in either the class docstring or the init docstring, but not both.

However, I see that the docstring is only recognized when in the class docstring.

Consider this simple main.py:

"""MyModule"""

class MyClass:
    def __init__(self, variable: int) -> None:
        """_summary_

        Args:
            variable (int): _description_
        """
        self.my_variable = variable

    def method1(self) -> bool:
        """_summary_"""
        return bool(self.my_variable)

    def method2(self) -> int:
        """_summary_"""
        return 2 if self.my_variable else 1

This will raise a missing-class-docstring error. If I move the docstring from __init to the Class, it passes. Also of note, if I put the docstring in both places, I do not get multiple-constructor-doc error.

Configuration

[MAIN]
load-plugins=pylint.extensions.docparams

Command used

pylint main.py

Pylint output

************* Module main
main.py:3:0: C0115: Missing class docstring (missing-class-docstring)

------------------------------------------------------------------
Your code has been rated at 8.57/10 (previous run: 8.57/10, +0.00)

Expected behavior

I expect to not receive this error when the docstring is in __init__ Also, I expect to receive multiple-constructor-doc if I put the docstring in both places.

Pylint version

Python 3.9.10
I tested both pylint 2.14.0b and 2.13.9

OS / Environment

Windows Git Bash

Additional dependencies

No response