Exported image with custom background isn't working as expected
**Describe the bug**
When using custom background in canvas, exported image is blurred in area of custom background image and included something like extra svg.

**To Reproduce**
[Sandbox link to see bug](https://codesandbox.io/p/sandbox/serene-shannon-hs35gs?file=%2FApp.tsx)

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

**Expected behavior**
I want drawed strokes and custom image in one frame.

**Screenshots**
![Untitled](https://github.com/vinothpandian/react-sketch-canvas/assets/55724824/b4aef336-1cc3-46c4-b475-5a5c6fa8a270)


**Desktop (please complete the following information):**

- OS: [macOS 10.15.7]
- Browser [chrome]
- Version [Version 123.0.6312.107 (Official Build) (x86_64)]


