fix: Remove packaging library (#1816)

* Remove packaging library

* Updated tests setup

Author: gavin-aguiar

workers/proxy_worker/dispatcher.py

@@ -14,7 +14,6 @@
 from typing import Any, Optional
 
 import grpc
-from packaging.version import Version
 
 from proxy_worker import protos
 from proxy_worker.logging import (
@@ -102,8 +101,7 @@ def get_global_current_invocation_id() -> Optional[str]:
 def get_current_invocation_id() -> Optional[Any]:
     global _library_worker
     # Check global current invocation first (most up-to-date)
-    if (_library_worker
-            and Version(_library_worker.version.VERSION) < Version("1.1.0b4")):
+    if _library_worker and not hasattr(_library_worker, 'invocation_id_cv'):
         global_invocation_id = get_global_current_invocation_id()
         if global_invocation_id is not None:
             return global_invocation_id

workers/tests/unittest_proxy/test_dispatcher.py

@@ -412,6 +412,9 @@ def setUp(self):
         with dispatcher_module._current_invocation_lock:
             dispatcher_module._current_invocation_id = None
 
+        # Clear library worker to ensure tests run with expected state
+        dispatcher_module._library_worker = None
+
     def tearDown(self):
         """Clean up after each test"""
         # Import the module-level variables properly
@@ -425,6 +428,9 @@ def tearDown(self):
         with dispatcher_module._current_invocation_lock:
             dispatcher_module._current_invocation_id = None
 
+        # Clear library worker
+        dispatcher_module._library_worker = None
+
     def test_global_invocation_id_set_and_get(self):
         """Test setting and getting global current invocation ID"""
         test_id = "test-invocation-123"