LinearGradient Component does not allow for selecting gradient direction with x1, y1, and x2, y2

**Describe the bug**
LinearGradient props x1, x2, y1, y2 for defining the vector gradient direction do not work and end up removing the LinearGradient and it's Stops leaving you with just a single color rectangle with the Rect component.


**To Reproduce**
Code snippet:

JSX:
```

```

CSS:
```
scoreBg: {
position: 'absolute',
top: '0px',
left: '0px',
width: '100px',
height: 'auto',
zIndex: '1',
},
```

**Expected behavior**

An SVG Viewer provides the following with the same transcribed SVG code. The linear gradient direction is diagonal starting at (0 , 0) to (40 , 40) x1=0, y1=0, x2=40%, x2=40%


**Desktop:**

- OS: Windows
- Browser: Chrome
- React-pdf version "3.4.2",