### Godot version

4.0 beta 10

### System information

Windows 10

### Issue description

Godot crashes when i accidently name 2 items in an enum the same

EDIT:
The editor freeze for some seconds, then both editor- and console-window dissapear

### Steps to reproduce

Write

```gdscript
enum {
    A,
}
```

and then add a second line with another A:

```gdscript
enum {
    A,
    A # <- crash
}
```

Does not always immediatly happen if i copy&paste items.
Does not happen when i change the script in another editor and open the script in Godot.

### Minimal reproduction project

[enum.zip](https://github.com/godotengine/godot/files/10313759/enum.zip)

if (base_type.has_container_element_type()) {
							result_type = base_type.get_container_element_type();
							result_type.type_source = base_type.type_source;
						} else {
							result_type.kind = GDScriptParser::DataType::VARIANT;
							result_type.type_source = GDScriptParser::DataType::UNDETECTED;
						}
						break;
					
					case Variant::VARIANT_MAX:
						break;
				}
			}
		}
	}
	p_subscript->set_datatype(result_type);
}
void GDScriptAnalyzer::reduce_ternary_op(GDScriptParser::TernaryOpNode *p_ternary_op) {
	reduce_expression(p_ternary_op->condition);
	reduce_expression(p_ternary_op->true_expr);
	reduce_expression(p_ternary_op->false_expr);
	GDScriptParser::DataType result;
	if (p_ternary_op->condition && p_ternary_op->condition->is_constant && p_ternary_op->true_expr->is_constant && p_ternary_op->false_expr && p_ternary_op->false_expr->is_constant) {
		p_ternary_op->is_constant = true;
		if (p_ternary_op->condition->reduced_value.booleanize()) {
			p_ternary_op->reduced_value = p_ternary_op->true_expr->reduced_value;
		} else {
			p_ternary_op->reduced_value = p_ternary_op->false_expr->reduced_value;
		}
	}