PyGILStateEnsure() (Probably) Crashes If Called After Finalization

Bug report

Bug description:

I'm pretty sure PyGILState_Ensure() will crash if called after finalization, particularly in the case where the thread doesn't already have a thread state active. I noticed this while looking at the function for something else.

CC @gpshead

CPython versions tested on:

CPython main branch

Operating systems tested on:

No response

从 PyGILState_Ensure() 开始，跟踪它在 finalization 后被调用时的行为，尤其是在没有活动 thread state 的线程中调用时。在 CPython main 上重现报告的崩溃，并为 finalization 后的调用添加或更新 coverage；当行为得到定义且不再崩溃时即表示完成。