Mark go_sdk module extension as {os,arch}_dependent (#3703)

* Mark `go_sdk` module extension as `{os,arch}_dependent`

This ensures that the lockfile maintains separate instances of this
extension for each OS/arch combination.

* Remove debug print

MODULE.bazel

@@ -5,6 +5,7 @@ module(
     repo_name = "io_bazel_rules_go",
 )
 
+bazel_dep(name = "bazel_features", version = "1.1.0")
 bazel_dep(name = "bazel_skylib", version = "1.2.0")
 bazel_dep(name = "platforms", version = "0.0.4")
 bazel_dep(name = "rules_proto", version = "4.0.0")

go/private/extensions.bzl

@@ -12,6 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+load("@bazel_features//:features.bzl", "bazel_features")
 load("//go/private:sdk.bzl", "detect_host_platform", "go_download_sdk_rule", "go_host_sdk_rule", "go_multiple_toolchains")
 load("//go/private:repositories.bzl", "go_rules_dependencies")
 
@@ -207,12 +208,20 @@ def _left_pad_zero(index, length):
         fail("index must be non-negative")
     return ("0" * length + str(index))[-length:]
 
+go_sdk_extra_kwargs = {
+    # The choice of a host-compatible SDK is expressed in repository rule attribute values and
+    # depends on host OS and architecture.
+    "os_dependent": True,
+    "arch_dependent": True,
+} if bazel_features.external_deps.module_extension_has_os_arch_dependent else {}
+
 go_sdk = module_extension(
     implementation = _go_sdk_impl,
     tag_classes = {
         "download": _download_tag,
         "host": _host_tag,
     },
+    **go_sdk_extra_kwargs
 )
 
 def _non_module_dependencies_impl(_ctx):