chore: rules_proto leaked another setup routine for WORKSPACE users

Author: alexeagle

e2e/smoke/WORKSPACE.bazel

@@ -22,6 +22,10 @@ load("@rules_proto//proto:repositories.bzl", "rules_proto_dependencies")
 
 rules_proto_dependencies()
 
+load("@rules_proto//proto:setup.bzl", "rules_proto_setup")
+
+rules_proto_setup()
+
 load("@bazel_features//:deps.bzl", "bazel_features_deps")
 
 bazel_features_deps()