### 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)

Size2 size = b->get_size() + theme_cache.button_pressed->get_minimum_size();
				ofst.x -= size.x;
				if (j == p_button) {
					return Rect2(ofst, size);
				}
			}
		}
	}
	return r;
}
void Tree::set_column_titles_visible(bool p_show) {
	if (show_column_titles == p_show) {
		return;
	}
	show_column_titles = p_show;
	queue_redraw();
}
bool Tree::are_column_titles_visible() const {
	return show_column_titles;
}
void Tree::set_column_title(int p_column, const String &p_title) {
	ERR_FAIL_INDEX(p_column, columns.size());
	if (columns[p_column].title == p_title) {
		return;
	}
	columns.write[p_column].title = p_title;
	update_column(p_column);
	queue_redraw();
}
String Tree::get_column_title(int p_column) const {