[Keymap] Fix miryoku layout for draculad (#19338)

keyboards/draculad/keymaps/manna-harbour_miryoku/config.h

@@ -5,6 +5,8 @@
 
 #pragma once
 
+#undef LAYER_STATE_8BIT
+
 #define XXX KC_NO
 
 #define LAYOUT_miryoku( \