fix(test): patch get_container at module level after import move

The G2 fix moved get_container to a top-level import in plan.py.
The Behave step must now patch 'cleveragents.cli.commands.plan.get_container'
instead of 'cleveragents.application.container.get_container' so the mock
is resolved at the call site.

ISSUES CLOSED: #9230

features/steps/cancel_worktree_cleanup_steps.py

@@ -112,7 +112,7 @@ def step_call_cleanup(context: object, plan_id: str) -> None:
     from cleveragents.cli.commands.plan import _cleanup_sandbox_for_plan
 
     with patch(
-        "cleveragents.application.container.get_container",
+        "cleveragents.cli.commands.plan.get_container",
         return_value=context.cwc_container,
     ):
         _cleanup_sandbox_for_plan(plan_id, context.cwc_service)