Scoped & versioned packages can't pass path mappings checks

[jkillian]

In DefinitelyTyped/DefinitelyTyped#29979, I was trying to create a new major version of a scoped package. In order to do that, you're supposed to add a path mapping similar to the example in the DefinitelyTyped readme:

        "paths": {
            "history": [ "history/v2" ]
        },

For the package I was trying to update, I believe that'd be:

        "paths": {
            "@expo/vector-icons": [ "expo__vector-icons/v6" ]
        },

However, the code here doesn't strip the version info and enforces that the mapping match the dependency name once unmangled. This means I'd have to write something like the following (which is incorrect):

        "paths": {
            "@expo/vector-icons": [ "expo__vector-icons" ]
        },

Would a PR be accepted to change this behavior?