fix: resolve ES modules compatibility in E2E test files

- Replace __dirname with import.meta.url pattern for ES modules compatibility
- Add fileURLToPath imports to all E2E test files
- Fix duplicate require statements in setup-verification.spec.ts
- Update playwright.config.ts to use relative path instead of __dirname

This fixes the 'ReferenceError: __dirname is not defined in ES module scope' error
when running Playwright tests in the ES modules environment.

node_modules/react-remove-scroll/UI/package.json

@@ -0,0 +1,8 @@
+{
+  "private": true,
+  "main": "../dist/es5/UI.js",
+  "jsnext:main": "../dist/es2015/UI.js",
+  "module": "../dist/es2015/UI.js",
+  "types": "UI.d.ts",
+  "sideEffects": false
+}