Fix ESM module detection to use pathToFileURL for cross-platform compatibility

[Copilot]

PR Checklist:

• Provide a meaningful description to this PR or mention which issues this fixes.
• Ensure the project builds with npm run build
• Add tests for your change. This includes negative tests (i.e. inputs that need to fail) as well as baseline tests (i.e. how should the directory structure look like?).
• Run the test suite with npm test
• If there are baseline changes, review them and make a separate commit for them with the comment "accept baselines" if they are desired changes
• If you added a required option, also add it to the template creation (.github/create_templates.ts)
• Add a detailed migration description to docs/updates explaining what the user needs to do when manually updating an existing project
• Add your changes to CHANGELOG.md (referencing the migration description and this PR or the issue you fixed)

Description:

The ESM module detection condition was unreliable on Windows due to manual file URL construction. On Windows, file URLs must include the drive letter (e.g., file:///C:/path), but the template used file://${process.argv[1]} which produces incorrect URLs.

Changes:

• Import pathToFileURL from Node.js url module for ESM templates
• Replace manual URL construction with pathToFileURL(process.argv[1]).href

Before:

if (import.meta.url === `file://${process.argv[1]}`) {
    new AdapterClass();
}

After:

import { pathToFileURL } from 'url';

if (import.meta.url === pathToFileURL(process.argv[1]).href) {
    new AdapterClass();
}

This ensures proper file URL format across all platforms.

---

💬 We'd love your input! Share your thoughts on Copilot coding agent in our 2 minute survey.