cudaPackages.buildRedist: do not require `config.cudaSupport` to be enabled (#457220)

        # a package is missing and is required for the build -- that should go in platformAssertions,

        # because attempts to access attributes on the package will cause evaluation errors.

        brokenAssertions = [

          {

            message = "CUDA support is enabled by config.cudaSupport";

            assertion = config.cudaSupport;

          }

          {

            message = "lib output precedes static output";

            assertion =