[dynamo] support dict.clear() (#119197)
For code like following:
```python
import torch
def f():
a = {"a": torch.randn(2, 2)}
a.clear()
return a
torch.compile(f, backend="eager", fullgraph=True)()
```
We have a graph break before the pr:
```
torch._dynamo.exc.Unsupported: call_method ConstDictVariable() clear [] {}
```
Test Plan:
Added new tests
Pull Request resolved: https://github.com/pytorch/pytorch/pull/119197
Approved by: https://github.com/jansel, https://github.com/anijain2305
