Fix invoke calls in dialog & shell init scripts (#675)

Co-authored-by: Lucas Nogueira <lucas@tauri.studio>

plugins/shell/rollup.config.mjs

@@ -2,10 +2,33 @@ import { readFileSync } from "fs";
 
 import { createConfig } from "../../shared/rollup.config.mjs";
 
-export default createConfig({
+import typescript from "@rollup/plugin-typescript";
+import resolve from "@rollup/plugin-node-resolve";
+import terser from "@rollup/plugin-terser";
+
+const config = createConfig({
   input: "guest-js/index.ts",
   pkg: JSON.parse(
     readFileSync(new URL("./package.json", import.meta.url), "utf8"),
   ),
   external: [/^@tauri-apps\/api/],
 });
+
+config.push({
+  input: "guest-js/init.ts",
+  output: {
+    file: "src/init-iife.js",
+    format: "iife",
+  },
+  plugins: [
+    resolve(),
+    typescript({
+      sourceMap: false,
+      declaration: false,
+      declarationDir: undefined,
+    }),
+    terser(),
+  ],
+});
+
+export default config;