Remove CxxSharedModuleWrapper from open-source (#52672)

Summary:
Pull Request resolved: #52672

This was used internally to work around some limitations of the bridge lifecycle. Given that we now have C++ TurboModules which are much more versatile, let's remove unnecessary concepts externally, as we move towards deprecating legacy C++ modules entirely.

Changelog: [General][Breaking] Removed CxxSharedModuleWrapper

Reviewed By: rshest

Differential Revision: D78484221

fbshipit-source-id: 95ed46b597dac55d823b70abe196264ce5b326ab

Author: javache