### 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.
}
		} else if (result.kind == GDScriptParser::DataType::NATIVE) {
			
			if (ClassDB::has_enum(result.native_type, p_type->type_chain[1]->name)) {
				if (p_type->type_chain.size() > 2) {
					push_error(R"(Enums cannot contain nested types.)", p_type->type_chain[2]);
					return bad_type;
				} else {
					result = make_native_enum_type(p_type->type_chain[1]->name, result.native_type);
				}
			} else {
				push_error(vformat(R"(Could not find type "%s" in "%s".)", p_type->type_chain[1]->name, first), p_type->type_chain[1]);
				return bad_type;
			}
		} else {
			push_error(vformat(R"(Could not find nested type "%s" under base "%s".)", p_type->type_chain[1]->name, result.to_string()), p_type->type_chain[1]);
			return bad_type;
		}
	}
	if (result.builtin_type != Variant::ARRAY && p_type->container_type != nullptr) {
		push_error("Only arrays can specify the collection element type.", p_type);
	}
	p_type->set_datatype(result);
	return result;
}
void GDScriptAnalyzer::resolve_class_member(GDScriptParser::ClassNode *p_class, StringName p_name, const GDScriptParser::Node *p_source) {
	ERR_FAIL_COND(!p_class->has_member(p_name));
	resolve_class_member(p_class, p_class->members_indices[p_name], p_source);
}
void GDScriptAnalyzer::resolve_class_member(GDScriptParser::ClassNode *p_class, int p_index, const GDScriptParser::Node *p_source) {