Fence out the content of /internal/BUILD.bazel

Since we don't want any of the content, generate an empty BUILD file.

PiperOrigin-RevId: 232337263
diff --git a/internal/BUILD.bazel b/internal/BUILD.bazel
index 4437231..73041a9 100644
--- a/internal/BUILD.bazel
+++ b/internal/BUILD.bazel
@@ -116,10 +116,20 @@
     ],
 )
 
+# We don't need to distribute any of the content of the BUILD.bazel file in this package
+# So generate an empty marker file
+genrule(
+    name = "generated_BUILD",
+    srcs = [],
+    # Name the output "BUILD" so it doesn't collide with InputArtifact "BUILD.bazel"
+    outs = ["BUILD"],
+    cmd = "echo \"# Marker that this directory is a Bazel package\" > $@",
+)
+
 filegroup(
     name = "npm_package_assets",
     srcs = [
-        "BUILD.bazel",
+        ":generated_BUILD",
         "build_defs.bzl",
         "common/compilation.bzl",
         "common/json_marshal.bzl",