bug: Regular classes that inherit dataclass do not get dataclass parameters

[has2k1]

Here is failing test case

from griffe.tests import temporary_visited_module

code = """
from dataclasses import dataclass

@dataclass
class Base:
    a: int
    b: str

@dataclass
class Derived1(Base):
    c: float

class Derived2(Base):
    d: float 
"""

with temporary_visited_module(code) as module:
    params1 = list(module["Derived1"].parameters)
    params2 = list(module["Derived2"].parameters)
    assert [p.name for p in params1] == ["a", "b", "c"]
    assert [p.name for p in params2] == ["a", "b"] # failing

[pawamoy]

Thanks, nice catch. The new approach will fix that too.