[pt2][inductor] retry add `triton.__verison__` as cache key, update cache layout (#98369)
Summary: retry of landing D44550100, try to import triton otherwise consider version as `None`
Test Plan: will make sure windows OSS tests run as well in CI
Differential Revision: D44694213
Pull Request resolved: https://github.com/pytorch/pytorch/pull/98369
Approved by: https://github.com/huydhn
