[Inductor] added aten.cauchy_ decomp (#92047)
Fixes #91675
TODO: compare perf of decomposed tan --vs-- libdevice tan, aten tan for triton, cpp backeneds
Pull Request resolved: https://github.com/pytorch/pytorch/pull/92047
Approved by: https://github.com/jgong5, https://github.com/jansel, https://github.com/lezcano, https://github.com/ngimel
