Revert: restore SDK team review for langgraph_plugin CODEOWNERS

Author: DABH

.github/CODEOWNERS

@@ -12,16 +12,14 @@
 /tests/nexus*/ @temporalio/nexus
 /tests/*nexus/ @temporalio/nexus
 
-# The AI SDK team owns the AI integration samples and their tests. For most of
-# these we add @temporalio/sdk too, so the SDK team can continue to manage
-# repo-wide concerns. The LangGraph plugin is owned solely by the AI SDK team
-# and does not require SDK team review.
+# The AI SDK team owns the AI integration samples and their tests. We add
+# @temporalio/sdk too, so the SDK team can continue to manage repo-wide concerns.
 /google_adk_agents/       @temporalio/sdk @temporalio/ai-sdk
-/langgraph_plugin/        @temporalio/ai-sdk
+/langgraph_plugin/        @temporalio/sdk @temporalio/ai-sdk
 /langsmith_tracing/       @temporalio/sdk @temporalio/ai-sdk
 /openai_agents/           @temporalio/sdk @temporalio/ai-sdk
 /strands_plugin/          @temporalio/sdk @temporalio/ai-sdk
 /tests/google_adk_agents/ @temporalio/sdk @temporalio/ai-sdk
-/tests/langgraph_plugin/  @temporalio/ai-sdk
+/tests/langgraph_plugin/  @temporalio/sdk @temporalio/ai-sdk
 /tests/langsmith_tracing/ @temporalio/sdk @temporalio/ai-sdk
 /tests/strands_plugin/    @temporalio/sdk @temporalio/ai-sdk