### Godot version

Godot 4 beta 10

### System information

Windows 10, mobile mode

### Issue description

You can give a node a blank name by deleting its name and press enter
![image](https://user-images.githubusercontent.com/94725241/210934227-a3b42f81-f152-470e-be6f-645321b9060e.png)


### Steps to reproduce

1. Create any node
2. Double click it, you should now be able to rename it
3. Backspace, than enter
4. You got a node with no name

### Minimal reproduction project

N/A
String node_name = p_node->get_name();
		if (connecting_signal) {
			node_name += " " + TTR("(Connecting From)");
		}
		item->set_text(0, node_name);
		item->set_selectable(0, marked_selectable);
		item->set_custom_color(0, get_theme_color(SNAME("accent_color"), SNAME("Editor")));
	} else if (!p_node->can_process()) {
		item->set_custom_color(0, get_theme_color(SNAME("disabled_font_color"), SNAME("Editor")));
	} else if (!marked_selectable && !marked_children_selectable) {
		Node *node = p_node;
		while (node) {
			if (marked.has(node)) {
				item->set_selectable(0, false);
				item->set_custom_color(0, get_theme_color(SNAME("error_color"), SNAME("Editor")));
				break;
			}
			node = node->get_parent();
		}
	}
	if (can_rename) { 
		String conf_warning = p_node->get_configuration_warnings_as_string();
		if (!conf_warning.is_empty()) {
			const int num_warnings = p_node->get_configuration_warnings().size();
			String warning_icon;
			if (num_warnings == 1) {
				warning_icon = SNAME("NodeWarning");
			} else if (num_warnings <= 3) {
				warning_icon = vformat("NodeWarnings%d", num_warnings);
			} else {