fix: adjust avatar selection logic to ensure consistent image indexing

Author: ErwanDecoster

src/utils/getAvatarVisualNumber.ts

@@ -11,9 +11,6 @@ export function getAvatarVisualNumber({
   const sum = digitGroups.reduce((accu, current) => {
     return accu + Number(current);
   }, 0);
-  const chosenImageIndex = sum % 14;
-  if (chosenImageIndex === 0) {
-    return 'profile-avatar-bg-1';
-  }
+  const chosenImageIndex = (sum % 13) + 1;
   return `profile-avatar-bg-${chosenImageIndex}`;
 }