Add a fake cc_toolchain_config rule for our fake cc_toolchain to point to when Bazel doesn't need C++ toolchain configuration

The toolchain configuration rule we are currently relying on will be removed as part of #8546

RELNOTES: None.
PiperOrigin-RevId: 262952632

tools/cpp/cc_configure.bzl

diff --git a/tools/cpp/cc_configure.bzl b/tools/cpp/cc_configure.bzl
index de834d6..4643406 100644
--- a/tools/cpp/cc_configure.bzl
+++ b/tools/cpp/cc_configure.bzl
@@ -91,15 +91,16 @@
        repository_ctx: repository context
        overriden_tools: dict of tool paths to use instead of autoconfigured tools
     """
-    paths = resolve_labels(repository_ctx, [
-        "@bazel_tools//tools/cpp:cc_toolchain_config.bzl",
-    ])
 
     env = repository_ctx.os.environ
     cpu_value = get_cpu_value(repository_ctx)
     if "BAZEL_DO_NOT_DETECT_CPP_TOOLCHAIN" in env and env["BAZEL_DO_NOT_DETECT_CPP_TOOLCHAIN"] == "1":
-        repository_ctx.symlink(paths["@bazel_tools//tools/cpp:cc_toolchain_config.bzl"], "cc_toolchain_config.bzl")
-        repository_ctx.symlink(Label("@bazel_tools//tools/cpp:BUILD.empty"), "BUILD")
+        paths = resolve_labels(repository_ctx, [
+            "@bazel_tools//tools/cpp:BUILD.empty",
+            "@bazel_tools//tools/cpp:empty_cc_toolchain_config.bzl",
+        ])
+        repository_ctx.symlink(paths["@bazel_tools//tools/cpp:empty_cc_toolchain_config.bzl"], "cc_toolchain_config.bzl")
+        repository_ctx.symlink(paths("@bazel_tools//tools/cpp:BUILD.empty"), "BUILD")
     elif cpu_value == "freebsd":
         paths = resolve_labels(repository_ctx, [
             "@bazel_tools//tools/cpp:BUILD.static.freebsd",