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-style-singleton/LICENSE

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+MIT License
+
+Copyright (c) 2017 Anton Korzunov
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

node_modules/react-style-singleton/README.md

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+react-style-singleton
+====
+
+__300b__ with all dependencies, minified and gzipped
+
+
+Creates a style component with internal _tracker_.
+- Adds styles to the browser on the __first__ instance mount.
+- Removes after the __last__ instance unmount.
+- Thus helps you deliver styles you need to the customer, and clean up later.
+- Is not server-side rendering compatible!
+
+
+# API
+
+## Component
+
+```js
+import {styleSingleton} from 'react-style-singleton'
+
+const Style = styleSingleton();
+
+export const App = () => (
+  <Style styles={'body {color:red}'} />
+);
+```
+
+## Hook
+
+```js
+import {styleHookSingleton} from 'react-style-singleton';
+
+const useStyle = styleHookSingleton();
+const useAnotherStyle = styleHookSingleton();
+
+export const App = () => {
+  useStyle('div {color:red}');
+  useAnotherStyle('body { background-color:red }');
+  return (<div />);
+}
+```
+
+# License
+
+MIT

node_modules/react-style-singleton/package.json

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+{
+  "name": "react-style-singleton",
+  "version": "2.2.3",
+  "description": "Just create a single stylesheet...",
+  "main": "dist/es5/index.js",
+  "types": "dist/es5/index.d.ts",
+  "jsnext:main": "dist/es2015/index.js",
+  "module": "dist/es2015/index.js",
+  "module:es2019": "dist/es2019/index.js",
+  "files": [
+    "dist"
+  ],
+  "scripts": {
+    "dev": "lib-builder dev",
+    "test": "jest",
+    "test:ci": "jest --runInBand --coverage",
+    "build": "lib-builder build && yarn size:report",
+    "release": "yarn build && yarn test",
+    "size": "npx size-limit",
+    "size:report": "npx size-limit --json > .size.json",
+    "lint": "lib-builder lint",
+    "format": "lib-builder format",
+    "update": "lib-builder update",
+    "prepublish-only": "yarn build && yarn changelog",
+    "changelog": "conventional-changelog -p angular -i CHANGELOG.md -s",
+    "changelog:rewrite": "conventional-changelog -p angular -i CHANGELOG.md -s -r 0"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/theKashey/react-style-singleton"
+  },
+  "bugs": {
+    "url": "https://github.com/theKashey/react-style-singleton/issues"
+  },
+  "homepage": "https://github.com/theKashey/react-style-singleton#readme",
+  "author": "Anton Korzunov (thekashey@gmail.com)",
+  "license": "MIT",
+  "devDependencies": {
+    "@theuiteam/lib-builder": "^0.1.4",
+    "@size-limit/preset-small-lib": "^11.0.2",
+    "size-limit": "^11.0.2",
+    "react": "^16.8.6",
+    "react-dom": "^16.8.6"
+  },
+  "peerDependencies": {
+    "@types/react": "*",
+    "react": "^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0 || ^19.0.0-rc"
+  },
+  "peerDependenciesMeta": {
+    "@types/react": {
+      "optional": true
+    }
+  },
+  "keywords": [
+    "react",
+    "style",
+    "css"
+  ],
+  "dependencies": {
+    "tslib": "^2.0.0",
+    "get-nonce": "^1.0.0"
+  },
+  "engines": {
+    "node": ">=10"
+  },
+  "husky": {
+    "hooks": {
+      "pre-commit": "lint-staged"
+    }
+  },
+  "lint-staged": {
+    "*.{ts,tsx}": [
+      "prettier --write",
+      "eslint --fix",
+      "git add"
+    ],
+    "*.{js,css,json,md}": [
+      "prettier --write",
+      "git add"
+    ]
+  },
+  "prettier": {
+    "printWidth": 120,
+    "trailingComma": "es5",
+    "tabWidth": 2,
+    "semi": true,
+    "singleQuote": true
+  },
+  "packageManager": "yarn@1.22.19"
+}