[Bug] Fix issue with Repeat Key-Combo test (#21005)

tests/repeat_key/repeat_key_combo/test_combos.c

@@ -0,0 +1,8 @@
+// Copyright 2023 Stefan Kerkmann (@KarlK90)
+// Copyright 2023 @filterpaper
+// Copyright 2023 Nick Brassel (@tzarc)
+// SPDX-License-Identifier: GPL-2.0-or-later
+#include "quantum.h"
+
+const uint16_t xy_combo[] PROGMEM = {KC_X, KC_Y, COMBO_END};
+combo_t        key_combos[]       = {COMBO(xy_combo, KC_Q)};