[issue45315] `PyType_FromSpec` does not copy the name

[Hai Shi]

Hai Shi <shihai1991 at 126.com> added the comment:

> the simplest solution is calling `type_set_name`, even if that runs some unnecessary checks.

Hm, I haven't find any case who use dynamical tp_name of Type_Spec temporarily.
If we meet this user case, Adding a new object pointer of type name in is an other option maybe:)

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nosy: +petr.viktorin, shihai1991

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<https://bugs.python.org/issue45315>
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