AC-12432, Issue-38908 Input type file required field validation bug fix

Author: Mohamed-Asar

app/code/Magento/Ui/view/base/web/js/form/element/media.js

@@ -14,6 +14,7 @@ define([
 
     return Abstract.extend({
         defaults: {
+            value: '',
             links: {
                 value: ''
             }
@@ -47,6 +48,16 @@ define([
             this.formId = namespace[0];
 
             return this;
+        },
+
+        /**
+         * Set the file input value
+         *
+         *  @param {ImageUploader} imageUploader - UI Class
+         * @param {Event} e
+         */
+        setFileValue: function (fileUploader, e) {
+            this.value(e.target.files.length ? e.target.files.length : '');
         }
     });
 });

app/code/Magento/Ui/view/base/web/templates/form/element/media.html

@@ -13,5 +13,5 @@
         id: uid,
         disabled: disabled,
         form: formId
-    }"
+    }, event:{change: setFileValue}"
 />