Remove vite-plugin-top-level-await, use native TLA instead

The plugin's manual __tla promise-chaining broke examples that call
createContainer() at module top level (vitest-demo, npm-scripts-demo).
The createContainer chunk didn't propagate __tla, so PackageManager was
still undefined when accessed. Native TLA (supported in all browsers
since 2021) handles this correctly via the module system.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: petrbrzek

vite.config.js

@@ -1,7 +1,7 @@
 import { defineConfig } from 'vite';
 import { resolve } from 'path';
 import wasm from 'vite-plugin-wasm';
-import topLevelAwait from 'vite-plugin-top-level-await';
+
 
 const isTest = process.env.VITEST === 'true';
 export default defineConfig({
@@ -17,7 +17,6 @@ export default defineConfig({
   },
   plugins: isTest ? [] : [
     wasm(),
-    topLevelAwait(),
     {
       name: 'browser-shims',
       enforce: 'pre',
@@ -68,6 +67,7 @@ export default defineConfig({
     format: 'es',
   },
   build: {
+    target: 'esnext',
     commonjsOptions: {
       transformMixedEsModules: true,
     },

vite.lib.config.js

@@ -1,12 +1,11 @@
 import { defineConfig } from 'vite';
 import { resolve } from 'path';
 import wasm from 'vite-plugin-wasm';
-import topLevelAwait from 'vite-plugin-top-level-await';
+
 
 export default defineConfig({
   plugins: [
     wasm(),
-    topLevelAwait(),
     {
       name: 'browser-shims',
       enforce: 'pre',
@@ -43,7 +42,6 @@ export default defineConfig({
     format: 'es',
     plugins: () => [
       wasm(),
-      topLevelAwait(),
     ],
     rollupOptions: {
       output: {

vite.sandbox.config.js

@@ -1,7 +1,7 @@
 import { defineConfig } from 'vite';
 import { resolve } from 'path';
 import wasm from 'vite-plugin-wasm';
-import topLevelAwait from 'vite-plugin-top-level-await';
+
 
 /**
  * Vite config for the sandbox server.
@@ -12,7 +12,6 @@ import topLevelAwait from 'vite-plugin-top-level-await';
 export default defineConfig({
   plugins: [
     wasm(),
-    topLevelAwait(),
     {
       name: 'browser-shims',
       enforce: 'pre',