[Bug] Chrome DevTools MCP hijacks system AppleScript events for Google Chrome

**Bug Description**
chrome-devtools-mcp launches Chrome from the stable bundle with a custom `--user-data-dir`, which hijacks all AppleScript Apple events for 'Google Chrome' and breaks user automation against their real browser; it should use a distinct bundle or expose a TCP debugging port.

**Environment Info**
- Platform: darwin
- Terminal: iTerm.app
- Version: 2.1.270
- Feedback ID: e6940080-2c59-4f0e-8928-11ffa0014752

**Errors**
```json
[]
```

Start by tracing how chrome-devtools-mcp launches Chrome on darwin, including its use of the stable bundle and custom --user-data-dir. Reproduce the AppleScript interference against a normal Google Chrome session, then verify that the chosen launch change no longer hijacks those events while preserving DevTools access.

Written by the indexing model from the issue text.