Fix Todoist custom project update (#17115)

* Fix Todoist custom project update

Custom projects were not refreshing the API state and were using
local/stored state. This resulted in invalid tasks being retained upon
update. This change resets the local Todoist API state, syncs it, and
then continues normal update operation(s) on the Todoist project data
object.

* Remove blank line after docstring

* Update logging call

* Simplify logging

homeassistant/components/calendar/todoist.py

@@ -518,6 +518,8 @@ class TodoistProjectData:
     def update(self):
         """Get the latest data."""
         if self._id is None:
+            self._api.reset_state()
+            self._api.sync()
             project_task_data = [
                 task for task in self._api.state[TASKS]
                 if not self._project_id_whitelist or
@@ -527,6 +529,7 @@ class TodoistProjectData:
 
         # If we have no data, we can just return right away.
         if not project_task_data:
+            _LOGGER.debug("No data for %s", self._name)
             self.event = None
             return True
 
@@ -541,6 +544,8 @@ class TodoistProjectData:
 
         if not project_tasks:
             # We had no valid tasks
+            _LOGGER.debug("No valid tasks for %s", self._name)
+            self.event = None
             return True
 
         # Make sure the task collection is reset to prevent an