Improve display of limited stock messages on images

Adjust font size and line height for "Stock limité" text in image editor to display on two lines.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: ae4037a0-2a6f-4530-9bac-79b543286bda
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/397bca8c-984f-43ff-841a-10897aeb8140/ae4037a0-2a6f-4530-9bac-79b543286bda/Z8vED4L

client/src/pages/image-editor.tsx

@@ -757,10 +757,17 @@ export default function ImageEditor() {
                                 style={{ 
                                   fontSize: ribbon.text.length <= 5 ? '28px' : 
                                            ribbon.text.length <= 8 ? '24px' : 
-                                           ribbon.text.length <= 11 ? '20px' : '16px' 
+                                           ribbon.text.length <= 11 ? '20px' : '16px',
+                                  lineHeight: ribbon.text === "Stock limité" ? '1.1' : 'normal'
                                 }}
                               >
-                                {ribbon.text}
+                                {ribbon.text === "Stock limité" ? (
+                                  <>
+                                    Stock
+                                    <br />
+                                    limité
+                                  </>
+                                ) : ribbon.text}
                               </div>
                             </div>
                           )}