CPython's compile() (Python/Python-ast.c) accepts any object with
__index__ for the flags and optimize arguments. RustPython's CompileArgs
typed both fields as OptionalArg<PyIntRef>, so a class with only
__index__ raised 'TypeError: Expected type int but X found' during arg
binding.
bpo-36907's regression test (test_call.test_fastcall_clearing_dict)
exercises exactly this: an IntWithDict.__index__ that mutates
self.kwargs mid-call. CPython parses both args via __index__ and doesn't
crash even when the kwargs dict is cleared between binding and use.
Switch flags and optimize to OptionalArg<ArgPrimitiveIndex<i32>>, the
same helper already used by range, slice, bytes.__mul__, hex, oct, etc.
ArgPrimitiveIndex calls try_index (= __index__ protocol) and converts
to the requested primitive in one step, so the three call sites in
compile() simplify from .map_or(Ok(d), |v| v.try_to_primitive(vm))? to
.map_or(d, |v| v.value).
Unmasks test_call.FastCallTests.test_fastcall_clearing_dict.
* Update `test_call.py` from 3.13.7
* Update `test_yield_from.py` from 3.13.7
* Update more tests to 3.13.7
* More tests to 3.13.7
* Remove patch from passing test