Simplify the logic of running ci workflow codegen (#62853)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/62853
wanted to simplify the logic in the `__post_int__`, and delegate the settings back to individual workflows, this gives us more flexibility in changing individual workflows, as well as reducing the complexity of understanding the mutation conditions.
Test Plan: Imported from OSS
Reviewed By: walterddr, seemethere
Differential Revision: D30149190
Pulled By: zhouzhuojie
fbshipit-source-id: 44df5b1e14184f3a81cb8004151525d0e0fb20d9