### 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)

if (select_mode == SELECT_SINGLE && selected_item == p_item && selected_col == p_column) {
		selected_item = nullptr;
		selected_col = -1;
	} else {
		if (select_mode == SELECT_ROW && selected_item == p_item) {
			selected_item = nullptr;
			selected_col = -1;
		} else {
			if (select_mode == SELECT_MULTI) {
				selected_item = p_item;
				selected_col = p_column;
			}
		}
	}
	if (select_mode == SELECT_MULTI || select_mode == SELECT_SINGLE) {
		p_item->cells.write[p_column].selected = false;
	} else if (select_mode == SELECT_ROW) {
		for (int i = 0; i < p_item->cells.size(); i++) {
			p_item->cells.write[i].selected = false;
		}
	}
	queue_redraw();
}
void Tree::set_select_mode(SelectMode p_mode) {