reenable BUILD_SPLIT_CUDA for windows and fixes Linux 11_1 tests (#51538)
Summary:
Reenabling split build for windows and also fixes linux 11_1 tests
Pull Request resolved: https://github.com/pytorch/pytorch/pull/51538
Reviewed By: lw
Differential Revision: D26198269
Pulled By: janeyx99
fbshipit-source-id: 363b2eed6631d75592120834d1543b438cfd2d8f
