[nnc][quant] Fix quantized concat (#69596)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/69596
Test Plan: Imported from OSS
Reviewed By: ZolotukhinM
Differential Revision: D32941108
Pulled By: IvanKobzarev
fbshipit-source-id: 727f608b98625648e2e444396d910838c95f58f2
