[quant] Quantized flip dispatch (#46235)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/46235
Test Plan: Imported from OSS
Reviewed By: vkuzo
Differential Revision: D24689161
Pulled By: z-a-f
fbshipit-source-id: 6833c2639b29ea5f6c81c880b8928c5a1951c7b8
