Use childNode.remove() instead of parentNode.removeChild() (S7762)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/views/Upload/UploadPage.vue

@@ -333,7 +333,7 @@ function getTextWidth(text, e) {
   hiddenSpan.style.visibility = "hidden";
   document.body.appendChild(hiddenSpan);
   const width = hiddenSpan.getBoundingClientRect().width;
-  document.body.removeChild(hiddenSpan);
+  hiddenSpan.remove();
 
   return width;
 }