fix(builtin): prevent usage with InputArtifact directories

These don't work with RBE, and only work accidentally with actions.

nodejs/directory_file_path.bzl

diff --git a/nodejs/directory_file_path.bzl b/nodejs/directory_file_path.bzl
index 0027fb7..846a119 100644
--- a/nodejs/directory_file_path.bzl
+++ b/nodejs/directory_file_path.bzl
@@ -9,8 +9,8 @@
 load("//nodejs/private/providers:directory_file_path_info.bzl", "DirectoryFilePathInfo")
 
 def _directory_file_path(ctx):
-    if not ctx.file.directory.is_source and not ctx.file.directory.is_directory:
-        fail("directory attribute must be a source directory or created with Bazel declare_directory (TreeArtifact)")
+    if not ctx.file.directory.is_directory:
+        fail("directory attribute must be created with ctx.declare_directory (TreeArtifact)")
     return [DirectoryFilePathInfo(path = ctx.attr.path, directory = ctx.file.directory)]
 
 directory_file_path = rule(