FEATURE: Show noscript view to unsupported browsers (#9373)

plugins/discourse-internet-explorer/config/locales/server.en.yml

@@ -1,4 +1,4 @@
 en:
   site_settings:
-    discourse_internet_explorer_enabled: "Internet Explorer support"
+    discourse_internet_explorer_enabled: "Enable temporary Internet Explorer support. This plugin is an effort to maintain compatibility with older browsers and will be completely removed in the near future."
     discourse_internet_explorer_deprecation_warning: "Show an Internet Explorer deprecation warning"

plugins/discourse-internet-explorer/public/js/ie.js

@@ -972,6 +972,9 @@ if (!String.prototype.startsWith) {
 /* eslint-enable */
 
 // Polyfill Promise - used by popper.js
+if (!window.Promise) {
+  window.Promise = true;
+}
 window.addEventListener(
   "load",
   function() {