fix(@angular-devkit/build-angular): don't show [NG HMR] Unknown input type when restoring file type input

Author: alan-agius4

packages/angular_devkit/build_angular/src/webpack/plugins/hmr/hmr-accept.ts

@@ -211,6 +211,10 @@ function restoreFormValues(oldInputs: any[], oldOptions: any[]): void {
         case 'week':
           newElement.value = oldElement.value;
           break;
+        case 'file':
+          // Ignored due: Uncaught DOMException: Failed to set the 'value' property on 'HTMLInputElement':
+          // This input element accepts a filename, which may only be programmatically set to the empty string.
+          break;
         default:
           console.warn('[NG HMR] Unknown input type ' + oldElement.type + '.');
           continue;