fix: ie 11 cross browser fixes

Author: sghoweri

packages/uikit-workshop/src/scripts/components/pl-toggle-layout/pl-toggle-layout.scss

@@ -1,6 +1,5 @@
 @import '../../../sass/scss/core.scss';
 
-:host,
 pl-toggle-layout {
   display: none;
   align-self: center;

packages/uikit-workshop/src/scripts/components/pl-toggle-theme/pl-toggle-theme.scss

@@ -1,7 +1,6 @@
 @import '../../../sass/scss/core.scss';
 @import '{ .pl-c-tools__action, .pl-c-tools__action-text, .pl-c-tools__action-icon } from ../../../sass/scss/04-components/_tools.scss';
 
-:host,
 pl-toggle-theme {
   display: inline-flex;
   align-self: center;

packages/uikit-workshop/src/scripts/utils/polyfills.js

@@ -1,4 +1,7 @@
 import 'es6-promise/auto';
+import 'core-js/modules/es7.array.includes';
+import 'core-js/modules/es6.array.from';
+import 'core-js/modules/es6.object.assign';
 
 if (window.NodeList && !NodeList.prototype.forEach) {
   NodeList.prototype.forEach = Array.prototype.forEach;