for SymInt nodes in fx graph, get result from node meta in inductor GraphLowering (#95152)
Finally, swin is passing, with no floors in the generated code.
I don't know how to write a test for it though, and swin patterns triggering this are pretty complicated (even prior to this PR we were already good at pulling `floors` out of device code).
Pull Request resolved: https://github.com/pytorch/pytorch/pull/95152
Approved by: https://github.com/ezyang
