Add toolchain type for remaining actions

This is the first step for migrating to Automatic Exec Groups (check [#19261](https://github.com/protocolbuffers/protobuf/issues/19261)).

PiperOrigin-RevId: 697777264

csharp/src/Google.Protobuf/Reflection/FeatureSetDescriptor.g.cs

diff --git a/csharp/src/Google.Protobuf/Reflection/FeatureSetDescriptor.g.cs b/csharp/src/Google.Protobuf/Reflection/FeatureSetDescriptor.g.cs
deleted file mode 100644
index 208ce1f..0000000
--- a/csharp/src/Google.Protobuf/Reflection/FeatureSetDescriptor.g.cs
+++ /dev/null
@@ -1,17 +0,0 @@
-#region Copyright notice and license
-// Protocol Buffers - Google's data interchange format
-// Copyright 2008 Google Inc.  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
-#endregion
-
-namespace Google.Protobuf.Reflection;
-
-internal sealed partial class FeatureSetDescriptor
-{
-    // Canonical serialized form of the edition defaults, generated by embed_edition_defaults.
-    private const string DefaultsBase64 =
-        "ChMYhAciACoMCAEQAhgCIAMoATACChMY5wciACoMCAIQARgBIAIoATABChMY6AciDAgBEAEYASACKAEwASoAIOYHKOgH";
-}

python/internal.bzl

diff --git a/python/internal.bzl b/python/internal.bzl
index dbd16a2..b789e51 100644
--- a/python/internal.bzl
+++ b/python/internal.bzl
@@ -45,6 +45,7 @@
             mnemonic = "InternalCopyFile",
             progress_message = "Copying files",
             use_default_shell_env = True,
+            toolchain = None,
         )
 
     else:
@@ -65,6 +66,7 @@
             mnemonic = "InternalCopyFile",
             progress_message = "Copying files",
             use_default_shell_env = True,
+            toolchain = None,
         )
 
     return [