ExecuTorch execution crashed for unbind_copy.int

### 🕵️‍♂️ Detected with [FACTO](https://github.com/meta-pytorch/FACTO)

### 🐛 Describe the bug

FACTO Generated meta_tuple:
```
['ArgType.Tensor torch.bool (1, 7, 4)', 'ArgType.Dim 2']
```

error:
```
[op_unbind_copy.cpp:79] In function operator()(), assert failed (false): Unhandled dtype Bool for unbind_copy.int_out
zsh: abort
```

### Versions

nightly

cc @larryliu0820