Defer pottery import in reconciler to suppress monkey-patch message (#2132)

After 87c58c3, the pottery top-level import in utils/__init__.py was
moved into create_redlock() with stdout/stderr suppression. This made
reconciler.py the first module to import pottery (without suppression),
causing the "Monkey patched json.dumps()" message to appear on every
CLI invocation. Move the import into the functions where it's used,
after create_redlock() has already cached pottery in sys.modules.

AI-assisted: Claude Code

Signed-off-by: Christian Berendt <berendt@osism.tech>

Author: berendt

osism/tasks/reconciler.py

@@ -6,8 +6,6 @@
 
 from celery import Celery
 from loguru import logger
-from pottery import ReleaseUnlockedLock
-
 from osism import settings, utils
 from osism.tasks import Config
 
@@ -58,6 +56,8 @@ def run(self, publish=True):
         if publish:
             utils.finish_task_output(self.request.id, rc=rc)
 
+        from pottery import ReleaseUnlockedLock
+
         try:
             lock.release()
         except ReleaseUnlockedLock:
@@ -80,6 +80,8 @@ def run_on_change(self):
         )
         p.wait()
 
+        from pottery import ReleaseUnlockedLock
+
         try:
             lock.release()
         except ReleaseUnlockedLock: