Retry loading chunks to make the app more resilient (#29001)

Will also fix some Playwright flakes

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

webpack.config.js

@@ -10,6 +10,7 @@ const CssMinimizerPlugin = require("css-minimizer-webpack-plugin");
 const HtmlWebpackInjectPreload = require("@principalstudio/html-webpack-inject-preload");
 const CopyWebpackPlugin = require("copy-webpack-plugin");
 const VersionFilePlugin = require("webpack-version-file-plugin");
+const { RetryChunkLoadPlugin } = require("webpack-retry-chunk-load-plugin");
 
 // Environment variables
 // RIOT_OG_IMAGE_URL: specifies the URL to the image which should be used for the opengraph logo.
@@ -690,6 +691,13 @@ module.exports = (env, argv) => {
                 templateString: "<%= extras.VERSION %>",
                 extras: { VERSION },
             }),
+
+            // Due to issues such as https://github.com/vector-im/element-web/issues/25277 we should retry chunk loading
+            new RetryChunkLoadPlugin({
+                cacheBust: `() => Date.now()`,
+                retryDelay: 500,
+                maxRetries: 3,
+            }),
         ].filter(Boolean),
 
         output: {