refactor: update to tailwind v4 (#34415)

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
Co-authored-by: yyh <yuanyouhuilyz@gmail.com>

web/eslint.config.mjs

@@ -150,6 +150,11 @@ export default antfu(
       'tailwindcss/no-unnecessary-whitespace': 'error',
       'tailwindcss/no-unknown-classes': 'warn',
     },
+    settings: {
+      'better-tailwindcss': {
+        entryPoint: 'app/styles/globals.css',
+      },
+    },
   },
   {
     name: 'dify/custom/setup',