Add type inference for dequantization.tensors (#49517)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/49517
We should add concrete type info for Tensor List case as well.
Test Plan: ci
Reviewed By: qizzzh
Differential Revision: D25599223
fbshipit-source-id: 3614e9ec25fc963a8d6a0bd641735fcca6c87032
