Update debugger-frontend from 7727db8...d126cc8 (#48979)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/48979

Changelog: [Internal] - Update `react-native/debugger-frontend` from 7727db8...d126cc8

Resyncs `react-native/debugger-frontend` from GitHub - see `rn-chrome-devtools-frontend` [changelog](https://github.com/facebookexperimental/rn-chrome-devtools-frontend/compare/7727db85ac767cf41cce3e9ee54d27e97b2637f9...d126cc87f2b61e12e9579ddbfd4c0eb516bce881).

Reviewed By: huntie

Differential Revision: D68717476

fbshipit-source-id: ac2fd0551b069ae9077646ecb6b22f066e3e567c