MC-3315: Banner/Slider: Image still display on Banner/Slider slide-out after deleted

- Updated test

Author: nathanjosiah

dev/tests/js/jasmine/tests/app/code/Magento/PageBuilder/view/adminhtml/web/js/form/element/image-uploader.test.js

@@ -140,6 +140,7 @@ define([
             });
             it('Should trigger an event when uploader is associated to the deleted image', function () {
                 uploader.id = 'abc123';
+                uploader.value = jasmine.createSpy();
                 spyOn(uploader, 'getFileId').and.returnValue('foo');
 
                 uploader.onDeleteFile({}, {
@@ -148,6 +149,8 @@ define([
 
                 expect(mocks['Magento_PageBuilder/js/events'].trigger)
                     .toHaveBeenCalledWith('image:abc123:deleteFileAfter');
+                // Assert the instance was reset
+                expect(uploader.value).toHaveBeenCalledWith([]);
             });
         });
     });