bpo-46841: Fix error message hacks in GET_AWAITABLE
#31664
Merged
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The existing code was already quite sensitive to small changes in the compiler, but it is also now technically incorrect (due to the recent addition of inline bytecode caches).
We have all the context we need in the compiler, so a normal oparg can be used as a much simpler mechanism for achieving the same effect.
https://bugs.python.org/issue46841