chore(examples): use local polyfills (#6076)

Author: dhayab

.eslintignore

@@ -20,6 +20,8 @@ coverage
 .next
 
 # Non-lintable source files
+## Polyfills for examples, retrieved from polyfill.io
+examples/**/polyfills.js
 ## React-Native TypeScript wasn't supporting the mix of react 18 and 17
 examples/react/react-native
 ## Excluded from global typescript config

.prettierignore

@@ -1 +1,2 @@
 packages/*/CHANGELOG.md
+examples/**/polyfills.js

examples/js/e-commerce-umd/index.html

@@ -25,7 +25,7 @@
     <link rel="stylesheet" href="./src/app.css" />
     <link rel="stylesheet" href="./src/app.mobile.css" />
     <link rel="stylesheet" href="./src/widgets/PriceSlider.css" />
-    <script src="https://polyfill.io/v3/polyfill.min.js?features=default%2CArray.prototype.find%2CArray.prototype.includes%2CPromise%2CObject.assign%2CObject.entries"></script>
+    <script src="./polyfills.js"></script>
     <title>E-commerce demo (UMD) | Algolia</title>
   </head>