fix(web): add Array#toSpliced and Array#toReversed polyfill (#10614)

packages/frontend/core/src/bootstrap/polyfill/array-to-spliced.ts

@@ -0,0 +1 @@
+import 'core-js/es/array/to-spliced.js';

packages/frontend/core/src/bootstrap/polyfill/browser.ts

@@ -1,3 +1,4 @@
+import './array-to-spliced';
 import './dispose';
 import './iterator-helpers';
 import './promise-with-resolvers';