test: make tailwind test more stable (#12732)

Author: ematipico

packages/integrations/tailwind/test/fixtures/basic/tailwind.config.js

@@ -1,6 +1,7 @@
 import path from 'node:path';
+import {fileURLToPath} from "node:url";
 
 /** @type {import('tailwindcss').Config} */
 export default {
-	content: [path.join(__dirname, 'src/**/*.{astro,html,js,jsx,md,mdx,svelte,ts,tsx,vue}')],
+	content: [path.join(path.dirname(fileURLToPath(import.meta.url)), 'src/**/*.{astro,html,js,jsx,md,mdx,svelte,ts,tsx,vue}')],
 };