fixup! test(public assets): make assets plugin wait for prebuild and …

…add the assets plugin to the addon template

tests/addon-template/vite.config.mjs

@@ -44,7 +44,10 @@ export default defineConfig(({ mode }) => {
         ignored: ["!**/node_modules/.embroider/rewritten-app/**"],
       },
     },
-    publicDir: resolve(process.cwd(), "public"),
+    // If the "app" is a classic addon dummy app, the public directory is tests/dummy/public,
+    // any public directory at the root would rather contain the assets provided by the addon,
+    // which are managed by the assets plugin.
+    publicDir: resolve(process.cwd(), "tests/dummy/public"),
     build: {
       outDir: resolve(process.cwd(), "dist"),
       rollupOptions: {