[Bug] chart type 'graph' drag area is too limited

### Version

4.8.0

### Link to Minimal Reproduction

https://echarts.apache.org/examples/zh/editor.html?c=graph-simple

### Steps to Reproduce

**Cannot drag chart outside red box**

### Current Behavior

can drag chart only inside red box

### Expected Behavior

can drag chart inside & outside red box

### Environment

```markdown
- OS:
- Browser:
- Framework:
```

### Any additional comments?

_No response_