Re-enable skipped Functions/DurableTask tests and bump timeout to 480s

- Remove hard skips from 4 tests in test_11_workflow_parallel.py
- Remove hard skip from test_conditional_branching in test_06_dt_multi_agent_orchestration_conditionals.py
- Increase pytest --timeout from 360 to 480 for Functions+DurableTask CI job
- Updated in both python-merge-tests.yml and python-integration-tests.yml

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

python/packages/azurefunctions/tests/integration_tests/test_11_workflow_parallel.py

@@ -42,7 +42,6 @@ class TestWorkflowParallel:
         self.base_url = base_url
         self.helper = sample_helper
 
-    @pytest.mark.skip(reason="Causes timeouts.")
     def test_parallel_workflow_document_analysis(self) -> None:
         """Test parallel workflow with a standard document."""
         payload = {
@@ -71,7 +70,6 @@ class TestWorkflowParallel:
         assert status["runtimeStatus"] == "Completed"
         assert "output" in status
 
-    @pytest.mark.skip(reason="Causes timeouts.")
     def test_parallel_workflow_short_document(self) -> None:
         """Test parallel workflow with a short document."""
         payload = {
@@ -91,7 +89,6 @@ class TestWorkflowParallel:
         assert status["runtimeStatus"] == "Completed"
         assert "output" in status
 
-    @pytest.mark.skip(reason="Causes timeouts.")
     def test_parallel_workflow_technical_document(self) -> None:
         """Test parallel workflow with a technical document."""
         payload = {
@@ -115,7 +112,6 @@ class TestWorkflowParallel:
         status = self.helper.wait_for_orchestration_with_output(data["statusQueryGetUri"], max_wait=300)
         assert status["runtimeStatus"] == "Completed"
 
-    @pytest.mark.skip(reason="Causes timeouts.")
     def test_workflow_status_endpoint(self) -> None:
         """Test that the workflow status endpoint works correctly."""
         payload = {

python/packages/durabletask/tests/integration_tests/test_06_dt_multi_agent_orchestration_conditionals.py

@@ -52,7 +52,6 @@ class TestMultiAgentOrchestrationConditionals:
         assert email_agent is not None
         assert email_agent.name == EMAIL_AGENT_NAME
 
-    @pytest.mark.skip(reason="Consistently fails due to orchestration timeouts - needs investigation")
     def test_conditional_branching(self):
         """Test that conditional branching works correctly."""
         # Test with obvious spam