Improve @babel/runtime esm stability (#12883)

test/runtime-integration/webpack-5/webpack.config.js

@@ -0,0 +1,13 @@
+const path = require("path");
+
+module.exports = {
+  mode: "development",
+
+  entry: path.join(__dirname, "../src/main-esm.mjs"),
+  output: {
+    path: __dirname,
+    filename: "output.js",
+  },
+
+  devtool: false,
+};