[vulkan] adaptive_avg_pool2d (#41220)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/41220
Test Plan: Imported from OSS
Reviewed By: AshkanAliabadi
Differential Revision: D22754943
Pulled By: IvanKobzarev
fbshipit-source-id: 91a94f32db005ebb693384f4d27efe66e2c33a14
