do not re-render <input file> if input holds unuploaded files

src/LiveComponent/assets/src/normalize_attributes_for_comparison.ts

@@ -6,10 +6,18 @@
  * if two nodes are identical.
  */
 export function normalizeAttributesForComparison(element: HTMLElement): void {
-    if (element.value) {
-        element.setAttribute('value', element.value);
-    } else if (element.hasAttribute('value')) {
-        element.setAttribute('value', '');
+    const isFileInput = element instanceof HTMLInputElement && element.type === 'file';
+
+    // don't add value attribute to file inputs
+    // if a file is selected, but then a re-render happens before it is
+    // uploaded, we do NOT want to add a value="" attribute because
+    // this would cause the input to re-render (without the attached file)
+    if (!isFileInput) {
+        if (element.value) {
+            element.setAttribute('value', element.value);
+        } else if (element.hasAttribute('value')) {
+            element.setAttribute('value', '');
+        }
     }
 
     Array.from(element.children).forEach((child: HTMLElement) => {