Fix image generation to correctly align text in the editor

Update image editor canvas properties including width, height, x, and y to resolve text alignment issues.

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/Hpj2VzR

client/src/pages/image-editor.tsx

@@ -105,7 +105,12 @@ export default function ImageEditor() {
         backgroundColor: null,
         scale: 2, // Higher quality
         useCORS: true,
-        allowTaint: true
+        allowTaint: true,
+        logging: false,
+        width: previewRef.current.offsetWidth,
+        height: previewRef.current.offsetHeight,
+        x: 0,
+        y: 0
       });
 
       // Convert canvas to blob