fix(precompile) fixed replace script deleting the react-vfs.yaml file on iOS (#55394)

Summary:
When the user switches from Debug -> Release we'll replace the React-Core-prebuilt XCFramework.

Previously we nuked the ios/Pods/React-Core-prebuilt folder - but after we added support for VFS overlays to honor header files in the XCFramework this folder will also contain the VFS-file (React-VFS.yaml) which shouldn't be removed.

Removing this file causes an error when building.

This commit fixes this by deleting all directories inside the Pods/React-Core-prebuilt folder, leaving any files (React-VFS.yaml) untouched.

I've tested this in a new project and in RN-Tester and it works. I measured the size of the XCFramework when switching between Debug/Release to confirm that the switch still works.

I also changed the name of the podspec script since it showd RNDeps and not RNCore.

This issue was introduced in https://github.com/facebook/react-native/issues/54842 and not yet released in any version.

## Changelog:

[IOS] [FIXED] - Fixed replace script deleting the react-vfs.yaml file on iOS

Pull Request resolved: https://github.com/facebook/react-native/pull/55394

Test Plan: Run RN-Tester with precompiled binaries and build both release and debug.

Reviewed By: cortinico

Differential Revision: D92159099

Pulled By: cipolleschi

fbshipit-source-id: 3ae7bd03431b225672ac4b4f7b91e6ef44765019