[JIT] Prohibit subscripted assignments for tuple types (#44929)
Summary:
This would force jit.script to raise an error if someone tries to mutate tuple
```
Tuple[int, int] does not support subscripted assignment:
File "/home/nshulga/test/tupleassignment.py", line 9
torch.jit.script
def foo(x: Tuple[int, int]) -> int:
x[-1] = x[0] + 1
~~~~~ <--- HERE
```
Pull Request resolved: https://github.com/pytorch/pytorch/pull/44929
Reviewed By: suo
Differential Revision: D23777668
Pulled By: malfet
fbshipit-source-id: 8efaa4167354ffb4930ccb3e702736a3209151b6
