Async generator closing doesn't match 3.13+

Bug Report

Bug Description

There are a few edge cases when throwing into an async generator that result in some differences between Nuitka and CPython 3.13+.

️ Environment

1. Nuitka Version, Python Version, OS, and Platform

4.3rc1 Update status: newer than stable release '4.2.1' (cached, 30 minutes old). Commercial: None Python: 3.14.7 (main, Aug 10 2026, 07:46:56) [GCC 16.1.1 20260728] Flavor: Arch Python GIL: yes Executable: /usr/bin/python OS: Linux Arch: x86_64 Distribution: Arch None Version C compiler: gcc (gcc 16).

2. How Nuitka and Python were Installed

Source

3. Relevant PyPI Packages and Versions

N/A

️ To Reproduce

async def f():
    yield

x = f().aclose()

try:
    x.throw(GeneratorExit)
except StopIteration:
    pass

# RuntimeError on CPython 3.13+, StopIteration on Nuitka
x.throw(GeneratorExit)

Expected Behavior

Should match CPython on 3.13:

Traceback (most recent call last):
  File "/home/peter/develop/nuitka/mro.py", line 15, in <module>
    x.throw(GeneratorExit)
    ~~~~~~~^^^^^^^^^^^^^^^
RuntimeError: cannot reuse already awaited aclose()/athrow()

Actual Behavior & Output

Traceback (most recent call last):
  File "/home/peter/develop/nuitka/mro.py", line 15, in <module>
    x.throw(GeneratorExit)
StopIteration

↩️ Regression (if applicable)

This is the correct behavior for <3.13.

Additional Context (Optional)

Found while working on the 3.13 test suite.