### Godot version

v4.1.stable.official [970459615]

### System information

MacOS Big Sure 11.3

### Issue description

I got a bug report on my project and then did a deeper analysis to find the rootcause of Godot crashing on exit.
https://github.com/MikeSchulze/gdUnit4/issues/225

short story
- i removed all classes and resources step by step but still crashs at Godot exit
- finally i find out a simple print statement in the `func _exit_tree():` let the editor crash at exit.


### Steps to reproduce

Step one
- Create a new Project
- Create a new plugin over the editor provided plugin creation tool
- activate and exit ... works

Step two
- open the `plugin.gd` and add a print statement to `func _exit_tree():`

```
@tool
extends EditorPlugin


func _enter_tree():
	# Initialization of the plugin goes here.
	pass


func _exit_tree():
	prints("_exit_tree")
	# Clean-up of the plugin goes here.
	pass

```

- close/restart the editor is crashing at exit


### Minimal reproduction project

n/a
if (singleton->cmdline_export_mode) {
		print_line("\t" + p_task + ": step " + itos(p_step) + ": " + p_state);
		return false;
	} else if (singleton->progress_dialog) {
		return singleton->progress_dialog->task_step(p_task, p_state, p_step, p_force_refresh);
	} else {
		return false;
	}
}
void EditorNode::progress_end_task(const String &p_task) {
	if (singleton->cmdline_export_mode) {
		print_line(p_task + ": end");
	} else if (singleton->progress_dialog) {
		singleton->progress_dialog->end_task(p_task);
	}
}
void EditorNode::progress_add_task_bg(const String &p_task, const String &p_label, int p_steps) {
	singleton->progress_hb->add_task(p_task, p_label, p_steps);
}
void EditorNode::progress_task_step_bg(const String &p_task, int p_step) {
	singleton->progress_hb->task_step(p_task, p_step);
}
void EditorNode::progress_end_task_bg(const String &p_task) {
	singleton->progress_hb->end_task(p_task);
}
String EditorNode::_get_system_info() const {