[quant][graphmode][fx] Support quantize per channel in all cases (#44042)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/44042
Missed one case last time
Test Plan: Imported from OSS
Reviewed By: vkuzo
Differential Revision: D23479345
fbshipit-source-id: 30e6713120c494e9fab5584de4df9b25bec83d32
