chore: ignore built css when linting (#58589)

.lintstagedrc.js

@@ -56,7 +56,7 @@ module.exports = {
 
     if (files.length > 10) {
       completedStages.add('css');
-      return 'pnpm stylelint --fix ./**/*.css';
+      return 'stylelint --fix ./**/*.css';
     } else {
       return files.map(filename => `stylelint --fix '${filename}'`);
     }

.stylelintignore

@@ -0,0 +1,2 @@
+playwright
+client/public