[GHF] Ignore cancelled workflows (#82359)
If both cancelled and successful/failed workflow with the same name
exist, ignore the conclusion of cancelled one
Fixes https://github.com/pytorch/pytorch/issues/82335
### Description
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### Issue
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### Testing
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Pull Request resolved: https://github.com/pytorch/pytorch/pull/82359
Approved by: https://github.com/zengk95, https://github.com/janeyx99
