[FIX][QAT] Switch to use `kwargs` when `args` is empty (#89778)
Summary:
When `ref_node.args` is empty, the QAT will throw index out of range. Here is an example, line 574 is using `tensors = ....` in torch.cat func, which will be treated as `kwargs`
{F800357376}
f388506954
To fix the issue, we will use the value of the first kwarg if args is empty
Test Plan: f388545532
Reviewed By: bigning, lyoka
Differential Revision: D41396771
Pull Request resolved: https://github.com/pytorch/pytorch/pull/89778
Approved by: https://github.com/lyoka, https://github.com/houseroad
