Revert "Revert "Added zero.symint and modified aten::trapz to use symbolic ints (#82054)"" (#82779)
This reverts commit 0f52794ce7a9b4e2a2330420ec90b94e73aece4a.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/82779
Approved by: https://github.com/eellison
