ns for fx: ensure kwargs are handled when graph matching (#55078)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/55078
Fixes a TODO, make sure we iterate through kwargs as well as args
when navigating graphs. We can use `node.all_input_nodes` convenience
property to accomplish this.
Test Plan:
```
python test/test_quantization.py TestFXGraphMatcher
```
Imported from OSS
Reviewed By: jerryzh168
Differential Revision: D27474699
fbshipit-source-id: 8a6e3db5a73328c4f296ac5fce951e81213b6f58
