add polyfills/** to vscodeignore

extensions/css-language-features/.vscodeignore

@@ -13,6 +13,7 @@ server/bin/**
 server/build/**
 server/yarn.lock
 server/.npmignore
+polyfills/**
 yarn.lock
 server/extension.webpack.config.js
 extension.webpack.config.js

extensions/github-authentication/.vscodeignore

@@ -2,6 +2,7 @@ src/**
 !src/common/config.json
 out/**
 build/**
+polyfills/**
 extension.webpack.config.js
 tsconfig.json
 yarn.lock

extensions/markdown-language-features/.vscodeignore

@@ -3,6 +3,7 @@ src/**
 tsconfig.json
 out/test/**
 out/**
+polyfills/**
 extension.webpack.config.js
 extension-browser.webpack.config.js
 cgmanifest.json