BUG(v 1.0.48): Pasting rich content splits attribute values into individual attributes

### GrapesJS version

- [x] I confirm to use the latest version of GrapesJS

### What browser are you using?

Chrome

### Reproducible demo link

Change your version from 1.0.48 to 1.0.47

### Describe the bug

**How to reproduce the bug?**
1. Copy rich content from word
2. Paste into Grapes

** I'm using self hosted options **

**What is the expected behavior?**
1. Content should persist in editor

**What is the current behavior?**
1. Content errors out

### Code of Conduct

- [x] I agree to follow this project's Code of Conduct