### 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)

int count = 0;
	for (int i = 0; i < columns.size(); i++) {
		if (p_from->is_selected(i)) {
			count++;
		}
	}
	if (p_from->get_first_child()) {
		count += _count_selected_items(p_from->get_first_child());
	}
	if (p_from->get_next()) {
		count += _count_selected_items(p_from->get_next());
	}
	return count;
}
bool Tree::_is_branch_selected(TreeItem *p_from) const {