Fix test_create_store_multi flaky test (#66953)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/66953
cc pietern mrshenli pritamdamania87 zhaojuanmao satgera rohan-varma gqchen aazzolini osalpekar jiayisuse SciPioneer H-Huang
Test Plan: Imported from OSS
Reviewed By: kiukchung
Differential Revision: D31802767
Pulled By: H-Huang
fbshipit-source-id: a430e242788aac164496d4e65b85bf326537d019
