### Godot version

Beta 17, master

### System information

Windows 11

### Issue description

Godot gets a hard crash while attempting to code-complete for member `const` of a class.

### Steps to reproduce

```GDScript
enum E { V1 }

const e := E
```

And then type a `.` after the last `E`, which triggers code hints/auto-completion for subscripts based on `E` and causes a hard crash.

Does not happen for `var e := E.V1`.

### Minimal reproduction project

See above.
result.type_source = GDScriptParser::DataType::ANNOTATED_EXPLICIT;
		result.kind = GDScriptParser::DataType::BUILTIN;
		result.builtin_type = Variant::BOOL;
	} else if (left_type.is_variant() || right_type.is_variant()) {
		
		result.kind = GDScriptParser::DataType::VARIANT;
		mark_node_unsafe(p_binary_op);
	} else if (p_binary_op->variant_op < Variant::OP_MAX) {
		bool valid = false;
		result = get_operation_type(p_binary_op->variant_op, left_type, right_type, valid, p_binary_op);
		if (!valid) {
			push_error(vformat(R"(Invalid operands "%s" and "%s" for "%s" operator.)", left_type.to_string(), right_type.to_string(), Variant::get_operator_name(p_binary_op->variant_op)), p_binary_op);
		}
	} else {
		ERR_PRINT("Parser bug: unknown binary operation.");
	}
	p_binary_op->set_datatype(result);
}
#ifdef TOOLS_ENABLED
#ifndef DISABLE_DEPRECATED
const char *GDScriptAnalyzer::get_rename_from_map(const char *map[][2], String key) {
	for (int index = 0; map[index][0]; index++) {
		if (map[index][0] == key) {
			return map[index][1];
		}
	}
	return nullptr;
}
const char *GDScriptAnalyzer::check_for_renamed_identifier(String identifier, GDScriptParser::Node::Type type) {