Fix NotInvokedPrivateMethod lint warning in CatalystInstanceImpl (#55497)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/55497

Fixed NotInvokedPrivateMethod lint warning for unregisterFromInspector() by
adding SuppressLint annotation.

This is a native method that is called from C++ via JNI (registered in
CatalystInstanceImpl.cpp). The lint tool doesn't understand JNI calls,
so this is a false positive.

changelog: [internal] internal

Reviewed By: alanleedev

Differential Revision: D91991480

fbshipit-source-id: 8eab133a3800e6e578d9385c985ad8c886602898