Fix `_make_wrapper_subclass`'s storage_offset handling (#68268)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/68268
Previously, `_make_wrapper_subclass` ignored the storage offset it was
passed. This PR fixes that by updating TensorMaker::computeStorageSize()
and TensorMaker::make_tensor() to take into account storage_offset.
Test Plan: - added test
Reviewed By: albanD, bdhirsh
Differential Revision: D32396330
Pulled By: zou3519
fbshipit-source-id: 2c85bc4066044fe6cb5ab0fc192de6c9069855fd
