### Godot version

4.2 Stable

### System information

Linux

### Issue description

Calling TreeItem set_text() on a TreeItem that was removed via remove_child() causes debugging to end and the application to close without any error message.

### Steps to reproduce

Run the included example to get the debugger to crash. Comment out "treeItem.remove_child(subTreeItem)" for normal behaviour. 

### Minimal reproduction project

[treeItemCrash.zip](https://github.com/godotengine/godot/files/13534005/treeItemCrash.zip)

}
	item_edited(popup_edited_item_col, popup_edited_item);
	queue_redraw();
}
void Tree::value_editor_changed(double p_value) {
	if (updating_value_editor) {
		return;
	}
	if (!popup_edited_item) {
		return;
	}
	TreeItem::Cell &c = popup_edited_item->cells.write[popup_edited_item_col];
	c.val = p_value;
	line_editor->set_text(String::num(c.val, Math::range_step_decimals(c.step)));
	item_edited(popup_edited_item_col, popup_edited_item);
	queue_redraw();
}
void Tree::popup_select(int p_option) {
	if (!popup_edited_item) {
		return;
	}
	if (popup_edited_item_col < 0 || popup_edited_item_col > columns.size()) {
		return;
	}
	popup_edited_item->cells.write[popup_edited_item_col].val = p_option;
	
	queue_redraw();
	item_edited(popup_edited_item_col, popup_edited_item);
}
void Tree::_go_left() {