wire up the static fallback error pages

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

webpack.config.js

@@ -335,6 +335,20 @@ module.exports = (env, argv) => {
                 chunks: ['mobileguide'],
             }),
 
+            // These are the static error pages for when the javascript env is *really unsupported*
+            new HtmlWebpackPlugin({
+                template: './src/vector/static/unable-to-load.html',
+                filename: 'static/unable-to-load.html',
+                minify: argv.mode === 'production',
+                chunks: [],
+            }),
+            new HtmlWebpackPlugin({
+                template: './src/vector/static/incompatible-browser.html',
+                filename: 'static/incompatible-browser.html',
+                minify: argv.mode === 'production',
+                chunks: [],
+            }),
+
             // This is the usercontent sandbox's entry point (separate for iframing)
             new HtmlWebpackPlugin({
                 template: './node_modules/matrix-react-sdk/src/usercontent/index.html',