Signature has wrong class name when using metaclasses

[gpotter2]

Hi,

When using metaclasses, the signature has the wrong class name. Here's a very easy example:

import jedi

class Dummy_metaclass(type):
    def __new__(cls, name, bases, dct):
        dct["ID"] = 0 # something something
        return type.__new__(cls, name, bases, dct)

class Test(metaclass=Dummy_metaclass):
    def __init__(self, a, b, c):
        pass

interpreter = jedi.Interpreter("Test(", path="input-text", namespaces=[locals(), globals()])
sig = interpreter.get_signatures()[0]
print(sig)
print(sig.name)

outputs:

<Signature: index=0 Dummy_metaclass(a, b, c)>
Dummy_metaclass

It should be

<Signature: index=0 Test(a, b, c)>
Test

The ptpython project uses sig.name as shown above to show its results, so this is likely causing prompt-toolkit/ptpython#542

Infos: jedi version used: f2444b4, Python 3.11.2