Enhance orphan handling in Scheduler, update lang

- Scheduler now includes orphaned tasks by default. Before this,
  the ::runTask() method never got to handling or logging orphaned
  tasks because of the default filtering excluding them.
- Adds exceptional log for orphaned tasks.
- Update language file to match.

administrator/components/com_scheduler/src/Scheduler/Scheduler.php

@@ -41,7 +41,8 @@ class Scheduler
 	private const LOG_TEXT = [
 		Status::OK      => 'COM_SCHEDULER_SCHEDULER_TASK_COMPLETE',
 		Status::NO_LOCK => 'COM_SCHEDULER_SCHEDULER_TASK_LOCKED',
-		Status::NO_RUN  => 'COM_SCHEDULER_SCHEDULER_TASK_UNLOCKED'
+		Status::NO_RUN  => 'COM_SCHEDULER_SCHEDULER_TASK_UNLOCKED',
+		Status::NO_ROUTINE => 'COM_SCHEDULER_SCHEDULER_TASK_ROUTINE_NA'
 	];
 
 	/**
@@ -212,8 +213,8 @@ public function fetchTasks(array $filters, array $listConfig): array
 		// Default to only enabled tasks
 		$model->setState('filter.state', 1);
 
-		// Default to excluding orphaned tasks
-		$model->setState('filter.orphaned', -1);
+		// Default to including orphaned tasks
+		$model->setState('filter.orphaned', 0);
 
 		$model->setState('list.ordering', 'a.next_execution');
 		$model->setState('list.direction', 'ASC');

administrator/language/en-GB/com_scheduler.ini

@@ -81,8 +81,9 @@ COM_SCHEDULER_ROUTINE_LOG_PREFIX="Task> "
 COM_SCHEDULER_SCHEDULER="Scheduler"
 COM_SCHEDULER_SCHEDULER_TASK_COMPLETE="Successfully finished task#%1$02d in %2$.2f (net %3$.2f) seconds."
 COM_SCHEDULER_SCHEDULER_TASK_LOCKED="task#%1$02d is locked."
+COM_SCHEDULER_SCHEDULER_TASK_ROUTINE_NA="Task#%1$02d has no corresponding plugin routine. The plugin might have been disabled or removed. Skipping execution."
 COM_SCHEDULER_SCHEDULER_TASK_START="Running task#%1$02d '%2$s'."
-COM_SCHEDULER_SCHEDULER_TASK_UNKNOWN_EXIT="Task#%1$d exited with code %4$d in %2$.2f (net %3$.2f) seconds."
+COM_SCHEDULER_SCHEDULER_TASK_UNKNOWN_EXIT="Task#%1$02d exited with code %4$d in %2$.2f (net %3$.2f) seconds."
 ; Maybe not this
 COM_SCHEDULER_SCHEDULER_TASK_UNLOCKED="Task#%1$02d was unlocked."
 COM_SCHEDULER_SELECT_EXEC_RULE="--- Select Rule ---"