GeezerVison

The PEP 810 commit added an is_lazy parameter to _PyAST_ImportFrom but did not update the test_peg_generator test that calls this function directly from a custom grammar. It also introduced a trailing comma in the PyImport_LazyImportsMode enum which is invalid under C++03 with -pedantic-errors, breaking test_cppext.

Pass 0 for the new is_lazy argument in the test grammar's _PyAST_ImportFrom calls, and remove the trailing comma from the enum definition to restore C++03 compatibility.

• Issue: Implement PEP 810 – Explicit lazy imports #142349