refactor: removed polyfill out of codebase (pattern-lab#1398)

* refactor: integrated polyfill as a dependency

* refactor: .matches polyfill is even already included in .closest polyfill

* refactor: reverted yarn.lock

as there weren't any relevant changes out of this pull requests code changes

Author: mfranzke

packages/uikit-workshop/src/scripts/components/pl-nav/get-parents.js

@@ -1,22 +1,4 @@
 export const getParents = (elem, selector) => {
-  // Element.matches() polyfill
-  if (!Element.prototype.matches) {
-    Element.prototype.matches =
-      Element.prototype.matchesSelector ||
-      Element.prototype.mozMatchesSelector ||
-      Element.prototype.msMatchesSelector ||
-      Element.prototype.oMatchesSelector ||
-      Element.prototype.webkitMatchesSelector ||
-      function (s) {
-        const matches = (this.document || this.ownerDocument).querySelectorAll(
-            s
-          ),
-          i = matches.length;
-        while (--i >= 0 && matches.item(i) !== this) {}
-        return i > -1;
-      };
-  }
-
   // Set up a parent array
   const parents = [];