ENGCOM-2079: Submitting search form (mini) with enter key fires event handlers bound by jquery twice #16281

 - Merge Pull Request #16281 from vgelani/magento2:2.1-develop-PR-back-15340
 - Merged commits:
   1. 5064cb8

Author: magento-engcom-team

app/code/Magento/Search/view/frontend/web/form-mini.js

@@ -207,6 +207,7 @@ define([
                     break;
                 case $.ui.keyCode.ENTER:
                     this.searchForm.trigger('submit');
+                    e.preventDefault();
                     break;
                 case $.ui.keyCode.DOWN:
                     if (this.responseList.indexList) {