Actually fix breaking change related to upb_proto_reflection_library

This is referenced by cel-spec.

PiperOrigin-RevId: 863368397

Author: protobuf-github-bot

bazel/BUILD

@@ -53,6 +53,14 @@ bzl_library(
     deps = ["//upb/bazel:upb_proto_library_bzl"],
 )
 
+bzl_library(
+    name = "upb_proto_reflection_library_bzl",
+    srcs = ["upb_proto_reflection_library.bzl"],
+    deprecation = "Use upb/bazel:upb_proto_library_bzl instead",
+    visibility = ["//visibility:public"],
+    deps = ["//upb/bazel:upb_proto_library_bzl"],
+)
+
 bzl_library(
     name = "proto_descriptor_set_bzl",
     srcs = ["proto_descriptor_set.bzl"],
@@ -70,6 +78,7 @@ filegroup(
         ":proto_library_bzl",
         ":py_proto_library_bzl",
         ":upb_c_proto_library_bzl",
+        ":upb_proto_reflection_library_bzl",
         "//bazel/common:for_bazel_tests",
         "//bazel/flags:for_bazel_tests",
         "//bazel/toolchains:for_bazel_tests",

bazel/upb_proto_reflection_library.bzl

@@ -0,0 +1,15 @@
+# Copyright (c) 2026, Google LLC
+# All rights reserved.
+#
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file or at
+# https://developers.google.com/open-source/licenses/bsd
+
+# This is a temporary shim to unbreak cel-spec and googleapis which referenced this file. At some
+# point in the future we can remove this once both are updated.
+
+"""upb_proto_reflection_library rule"""
+
+load("//upb/bazel:upb_proto_reflection_library.bzl", _upb_proto_reflection_library = "upb_proto_reflection_library")
+
+upb_proto_reflection_library = _upb_proto_reflection_library