fix: resolve isort duplicate import and add missing live_request_queue argument in test

- Remove duplicate LiveRequestQueue import caused by merge conflict
- Fix import ordering for tests.unittests module
- Add required live_request_queue argument to test_new_invocation_context_for_live_with_metadata test

Author: donggyun112

tests/unittests/test_runners.py

@@ -22,7 +22,6 @@
 
 from google.adk.agents.base_agent import BaseAgent
 from google.adk.agents.context_cache_config import ContextCacheConfig
-from google.adk.agents.live_request_queue import LiveRequestQueue
 from google.adk.agents.invocation_context import InvocationContext
 from google.adk.agents.live_request_queue import LiveRequestQueue
 from google.adk.agents.llm_agent import LlmAgent
@@ -37,12 +36,13 @@
 from google.adk.plugins.base_plugin import BasePlugin
 from google.adk.runners import Runner
 from google.adk.sessions.in_memory_session_service import InMemorySessionService
-from tests.unittests import testing_utils
 from google.adk.sessions.session import Session
 from google.adk.tools.function_tool import FunctionTool
 from google.genai import types
 import pytest
 
+from tests.unittests import testing_utils
+
 TEST_APP_ID = "test_app"
 TEST_USER_ID = "test_user"
 TEST_SESSION_ID = "test_session"
@@ -1579,8 +1579,9 @@ def test_new_invocation_context_for_live_with_metadata(self):
     )
 
     test_metadata = {"user_id": "live_user", "trace_id": "live_trace"}
+    live_queue = LiveRequestQueue()
     invocation_context = self.runner._new_invocation_context_for_live(
-        mock_session, metadata=test_metadata
+        mock_session, live_request_queue=live_queue, metadata=test_metadata
     )
 
     assert invocation_context.metadata == test_metadata