fix: detach debugger before navigation in browser bridge (#322)

* fix: detach debugger before navigation in browser bridge

* refactor: make detach() async, await all detach calls

- cdp.ts: detach() now async, awaits chrome.debugger.detach()
- background.ts: await detach() in handleNavigate and handleTabs close
- Eliminates theoretical race between detach and subsequent tab operations

Co-authored-by: jackwener <jackwener@gmail.com>

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Co-authored-by: bluey_heeler <fragwang231@gmail.com>
Co-authored-by: jackwener <jakevingoo@gmail.com>
Co-authored-by: jackwener <jackwener@gmail.com>

Author: 4 people