Add an alias to undo accidental unannounced breaking change

PiperOrigin-RevId: 862895639

Author: mkruskal-google

bazel/BUILD

@@ -69,3 +69,8 @@ filegroup(
         "//bazel/private:__pkg__",
     ],
 )
+
+alias(
+    name = "prefer_prebuilt_protoc",
+    actual = "//bazel/flags:prefer_prebuilt_protoc",
+)

bazel/flags/BUILD

@@ -41,7 +41,7 @@ bool_flag(
     name = "prefer_prebuilt_protoc",
     # TODO: this should be True after the feature is vetted with some adoption
     build_setting_default = False,
-    visibility = ["//visibility:private"],
+    visibility = ["//bazel:__pkg__"],
 )
 
 config_setting(

examples/example_without_cc_toolchain/.bazelrc

@@ -3,4 +3,4 @@ common --per_file_copt=external/.*protobuf.*/src/google/protobuf/compiler/main.c
 common --host_per_file_copt=external/.*protobuf.*/src/google/protobuf/compiler/main.cc@--THIS_CC_TOOLCHAIN_IS_BROKEN
 # But, users should be able to use pre-built protoc toolchains instead.
 common --incompatible_enable_proto_toolchain_resolution
-common --@com_google_protobuf//bazel/flags:prefer_prebuilt_protoc
+common --@com_google_protobuf//bazel:prefer_prebuilt_protoc