gh-123923: Defer refcounting for f_executable in _PyInterpreterFrame
#123924
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…terFrame` Use a `_PyStackRef` and defer the reference to `f_executable` when possible. This avoids some reference count contention in the common case of executing the same code object from multiple threads concurrently in the free-threaded build.
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Use a
_PyStackRefand defer the reference tof_executablewhen possible. This avoids some reference count contention in the common case of executing the same code object from multiple threads concurrently in the free-threaded build._PyInterpreterFramefields #123923