fix: preserve line breaks in text element rendering (#461)

- Change whiteSpace from 'nowrap' to 'pre-wrap' in preview panel
- Allows multi-line text content to display correctly
- Maintains existing text wrapping behavior

apps/web/src/components/editor/preview-panel.tsx

@@ -381,7 +381,7 @@ export function PreviewPanel() {
               textDecoration: element.textDecoration,
               padding: "4px 8px",
               borderRadius: "2px",
-              whiteSpace: "nowrap",
+              whiteSpace: "pre-wrap",
               // Fallback for system fonts that don't have classes
               ...(fontClassName === "" && { fontFamily: element.fontFamily }),
             }}