native_binary attribute env does not expand locations

[NEOatNHNG]

In the env attribute of cc_binary or sh_binary locations get expanded. This does not happen for native_binary which is unexpected.

Usage example:

native_binary(
    name = "my_example",
    src = "//src/example",
    data = [
        ":my_shared_lib",
    ],
    env = {
        "LD_DEBUG": "libs",
        "LD_LIBRARY_PATH": "$(rootpath :my_shared_lib)",
    },
)

Also it would be great to have the possibility to extend a path variable instead of overwriting it (env_inherit?).