Describe the bug
if a style is specified as ' rgb(255, 255, 0)' an error will occur
Cannot read properties of null (reading 'value'), I've gotten around this by trimming the style value.
To Reproduce

const Quixote = () => (
<Text style={{color: " rgb(255, 255, 0)"}} fixed>
~ Created with react-pdf ~
);
ReactPDF.render();
Expected behavior
Either a better error to occur or the CSS to be parsed, an extra space should not invalidate the CSS.
Desktop (please complete the following information):
- OS: MACOS
- Browser [read renderer / Node]
- React-pdf version "@react-pdf/renderer": "^3.1.12",