Fix saving styles to save only user-edited props

There was a typo in StylesColorPanel property, and we were passing incorrect values.
StylesColorPanel.value expects user set values
StylesColorPanel.inheritedValue expects merged styles
See b66f9ff095/packages/edit-site/src/components/global-styles/screen-colors.js (L23-L28)
[MAILPOET-6335]

packages/js/email-editor/src/components/styles-sidebar/screens/screen-colors.tsx

@@ -17,7 +17,7 @@ import { useEmailStyles } from '../../../hooks';
 import { storeName } from '../../../store';
 
 export function ScreenColors(): JSX.Element {
-	const { styles, defaultStyles, updateStyles } = useEmailStyles();
+	const { userStyles, styles, updateStyles } = useEmailStyles();
 	const theme = useSelect( ( select ) => select( storeName ).getTheme(), [] );
 
 	return (
@@ -30,8 +30,8 @@ export function ScreenColors(): JSX.Element {
 				) }
 			/>
 			<StylesColorPanel
-				value={ styles }
-				inheritValue={ defaultStyles }
+				value={ userStyles }
+				inheritedValue={ styles }
 				onChange={ updateStyles }
 				settings={ theme?.settings }
 				panelId="colors"