Preserve queue on task clear

[JGoldman110]

This change will update logic to preserve original assigned queue when clearing a task. This PR was created based on the discussion in #20143.

[uranusjr]

Does this not apply to basically all attributes on task? The fix would be no more than a band-aid (and too easy to be undone) if that is the case.

[JGoldman110]

Does this not apply to basically all attributes on task? The fix would be no more than a band-aid (and too easy to be undone) if that is the case.

@uranusjr I don't look at it as a band-aid, my understanding is that a queue is assigned not to a task but to the instance of a task that relates to a particular DagRun. task_instance_mutation_hook is not called again when clearing a task instance, so any changes you make to a queue in the hook will no longer apply after clearing that task instance. Maybe a better approach would be to call task_instance_mutation_hook on clear to be able to apply same logic when task instance is first being created?

[uranusjr]

Maybe task_instance_mutation_hook should always be called whenever refresh_with_task is called? I am not sure if this would cause other issues though.

[github-actions]

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