Remove module extension repo name hack

This hack is not necessary as the name of the referenced repo is static and thus can be `use_repo`ed (in fact, it is already visible).

internal/bzlmod/go_deps.bzl

@@ -604,9 +604,7 @@ def _go_deps_impl(module_ctx):
             continue
         go_repository_args = {
             "name": module.repo_name,
-            # Compared to the name attribute, the content of this attribute does not go through repo
-            # mapping.
-            "internal_only_do_not_use_apparent_name": module.repo_name,
+            "internal_only_do_not_use_is_extension_repo": True,
             "importpath": path,
             "build_directives": _get_directives(path, gazelle_overrides, gazelle_default_attributes),
             "build_file_generation": _get_build_file_generation(path, gazelle_overrides, gazelle_default_attributes),

internal/go_repository.bzl

@@ -123,7 +123,7 @@ def _go_repository_impl(ctx):
     fetch_repo_args = None
     gazelle_path = None
 
-    is_module_extension_repo = bool(ctx.attr.internal_only_do_not_use_apparent_name)
+    is_module_extension_repo = ctx.attr.internal_only_do_not_use_is_extension_repo
 
     # Declare Label dependencies at the top of function to avoid unnecessary fetching:
     # https://docs.bazel.build/versions/main/skylark/repository_rules.html#when-is-the-implementation-function-executed
@@ -311,12 +311,7 @@ def _go_repository_impl(ctx):
             gazelle_path = ctx.path(Label(_gazelle))
 
         if is_module_extension_repo:
-            # This repository is generated by the 'go_deps' extension. Since as of Bazel 7.2.0 there
-            # is no API that constructs a label referencing a sibling repo from within a repo rule,
-            # we rely on the assumption that the apparent name of the extension-generated repos is
-            # the last component of their canonical names.
-            extension_repo_prefix = ctx.attr.name[:-len(ctx.attr.internal_only_do_not_use_apparent_name)]
-            repo_config = ctx.path(Label("@@" + extension_repo_prefix + "bazel_gazelle_go_repository_config//:WORKSPACE"))
+            repo_config = ctx.path(Label("@bazel_gazelle_go_repository_config//:WORKSPACE"))
         else:
             repo_config = ctx.path(ctx.attr.build_config)
         cmd = [
@@ -640,7 +635,7 @@ go_repository = repository_rule(
             unexpected behavior for the given rule.
             """,
         ),
-        "internal_only_do_not_use_apparent_name": attr.string(doc = "Internal usage only"),
+        "internal_only_do_not_use_is_extension_repo": attr.bool(doc = "Internal usage only"),
     },
 )
 """See repository.md#go-repository for full documentation."""