[NNC] Fix loopnest.cache_accesses for reduce ops (fixed #59002) (#59136)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/59136
Test Plan: Imported from OSS
Reviewed By: ZolotukhinM
Differential Revision: D28768598
Pulled By: huiguoo
fbshipit-source-id: 99ab8430bc0ba395e2a041b03a7761de335ddda5
