Add Nextgen python proto_test to github

PiperOrigin-RevId: 632595087

python/build_targets.bzl

diff --git a/python/build_targets.bzl b/python/build_targets.bzl
index 0b18fe1..1014514 100644
--- a/python/build_targets.bzl
+++ b/python/build_targets.bzl
@@ -416,6 +416,11 @@
         srcs = ["google/protobuf/internal/wire_format_test.py"],
     )
 
+    internal_py_test(
+        name = "proto_test",
+        srcs = ["google/protobuf/internal/proto_test.py"],
+    )
+
     native.cc_library(
         name = "proto_api",
         hdrs = ["google/protobuf/proto_api.h"],