docs: add browser polyfills for IE11 with hash-based routing (#27135)

Closes #26511

PR Close #27135

aio/content/guide/browser-support.md

@@ -372,6 +372,27 @@ Here are the features which may require additional polyfills:
 
   </tr>
 
+  <tr style="vertical-align: top">
+
+    <td>
+
+      [Router](guide/router) 
+      
+      when using [hash-based routing](guide/router#appendix-locationstrategy-and-browser-url-styles)
+    </td>
+
+    <td>
+
+      [ES7/array](guide/browser-support#core-es7-array)
+
+    </td>
+
+    <td>
+      IE 11
+    </td>
+
+  </tr>
+
 </table>
 
 
@@ -402,7 +423,7 @@ Below are the polyfills which are used to test the framework itself. They are a
 
     <td>
 
-      <a id='core-es7-reflect' href="https://github.com/zloirock/core-js/blob/master/es7/reflect.js">ES7/reflect</a>
+      <a id='core-es7-reflect' href="https://github.com/zloirock/core-js/tree/v2/fn/reflect">ES7/reflect</a>
 
     </td>
 
@@ -416,6 +437,24 @@ Below are the polyfills which are used to test the framework itself. They are a
 
   </tr>
 
+  <tr>
+
+    <td>
+
+      <a id='core-es7-array' href="https://github.com/zloirock/core-js/tree/v2/fn/array">ES7/array</a>
+
+    </td>
+
+    <td>
+      MIT
+    </td>
+
+    <td>
+      0.1KB
+    </td>
+
+  </tr>
+
   <tr>
 
     <td>