### 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.
Error err = parser_ref->raise_status(GDScriptParserRef::PARSED);
			if (err) {
				push_error(vformat(R"(Could not resolve script "%s": %s.)", script_path, error_names[err]), p_source);
				return;
			}
			ERR_FAIL_COND_MSG(!parser_ref->get_parser()->has_class(p_class), R"(Parser bug: Mismatched external parser.)");
			GDScriptAnalyzer *other_analyzer = parser_ref->get_analyzer();
			GDScriptParser *other_parser = parser_ref->get_parser();
			int error_count = other_parser->errors.size();
			other_analyzer->resolve_class_interface(p_class);
			if (other_parser->errors.size() > error_count) {
				push_error(vformat(R"(Could not resolve class "%s".)", p_class->fqcn), p_source);
			}
			return;
		}
		p_class->resolved_interface = true;
		if (resolve_class_inheritance(p_class) != OK) {
			return;
		}
		GDScriptParser::DataType base_type = p_class->base_type;
		if (base_type.kind == GDScriptParser::DataType::CLASS) {
			GDScriptParser::ClassNode *base_class = base_type.class_type;
			resolve_class_interface(base_class, p_class);
		}
		for (int i = 0; i < p_class->members.size(); i++) {
			resolve_class_member(p_class, i);
		}
	}
}
void GDScriptAnalyzer::resolve_class_interface(GDScriptParser::ClassNode *p_class, bool p_recursive) {