Handle trailing masked column behavior for nested tensor (#100113)
Summary:
Handle trailing masked column behavior for nested tensor by padding during to_padded, to original tensor size
https://github.com/pytorch/pytorch/issues/97111
Test Plan: sandcastle & github
Differential Revision: D45167874
Pull Request resolved: https://github.com/pytorch/pytorch/pull/100113
Approved by: https://github.com/bertmaher, https://github.com/cpuhrsch, https://github.com/drisspg
