Add internal_helper to //protobuf/compiler/java:java

src/google/protobuf/compiler/java/BUILD.bazel

diff --git a/src/google/protobuf/compiler/java/BUILD.bazel b/src/google/protobuf/compiler/java/BUILD.bazel
index f24f8a5..73bfb97 100644
--- a/src/google/protobuf/compiler/java/BUILD.bazel
+++ b/src/google/protobuf/compiler/java/BUILD.bazel
@@ -158,6 +158,7 @@
         ":java_features_bootstrap",
         ":names",
         ":names_internal",
+        ":internal_helpers",
         "//src/google/protobuf",
         "//src/google/protobuf:arena",
         "//src/google/protobuf:port",