Add import to `importlib.abc`
Fixes #70525
```
---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
<ipython-input-3-334d309cf512> in <module>
----> 1 lltm_cpp = load(name="lltm_cpp", sources=["lltm.cpp"])
/usr/lib/python3.10/site-packages/torch/utils/cpp_extension.py in load(name, sources, extra_cflags, extra_cuda_cflags, extra_ldflags, extra_include_paths, build_directory, verbose, with_cuda, is_python_module, is_standalone, keep_intermediates)
1122 verbose=True)
1123 '''
-> 1124 return _jit_compile(
1125 name,
1126 [sources] if isinstance(sources, str) else sources,
/usr/lib/python3.10/site-packages/torch/utils/cpp_extension.py in _jit_compile(name, sources, extra_cflags, extra_cuda_cflags, extra_ldflags, extra_include_paths, build_directory, verbose, with_cuda, is_python_module, is_standalone, keep_intermediates)
1360 return _get_exec_path(name, build_directory)
1361
-> 1362 return _import_module_from_library(name, build_directory, is_python_module)
1363
1364
/usr/lib/python3.10/site-packages/torch/utils/cpp_extension.py in _import_module_from_library(module_name, path, is_python_module)
1751 spec = importlib.util.spec_from_file_location(module_name, filepath)
1752 module = importlib.util.module_from_spec(spec)
-> 1753 assert isinstance(spec.loader, importlib.abc.Loader)
1754 spec.loader.exec_module(module)
1755 return module
AttributeError: module 'importlib' has no attribute 'abc'
```
Pull Request resolved: https://github.com/pytorch/pytorch/pull/75736
Approved by: https://github.com/ezyang
