[fix] inplace remainder/% (#49390)
Summary:
Fixes https://github.com/pytorch/pytorch/issues/49214
**BC-Breaking**
Before this PR, `%=` didn't actually do the operation inplace and returned a new tensor.
After this PR, `%=` operation is actually inplace and the modified input tensor is returned.
Before PR,
```python
>>> import torch
>>> a = torch.tensor([11,12,13])
>>> id(a)
139627966219328
>>> a %= 10
>>> id(a)
139627966219264
```
After PR,
```python
>>> import torch
>>> a = torch.tensor([11,12,13])
>>> id(a)
139804702425280
>>> a %= 10
>>> id(a)
139804702425280
```
Pull Request resolved: https://github.com/pytorch/pytorch/pull/49390
Reviewed By: izdeby
Differential Revision: D25560423
Pulled By: zou3519
fbshipit-source-id: 2b92bfda260582aa4ac22c4025376295e51f854e
