Fix Per Key LED Indicator Callbacks (#18450)

Co-authored-by: Dasky <32983009+daskygit@users.noreply.github.com>
Co-authored-by: Nick Brassel <nick@tzarc.org>

keyboards/bandominedoni/keymaps/lednotg/keymap.c

@@ -205,7 +205,7 @@ bool process_record_user(uint16_t keycode, keyrecord_t *record) {
 }
 
 #ifdef RGB_MATRIX_ENABLE
-void rgb_matrix_indicators_user(void) {
+bool rgb_matrix_indicators_user(void) {
     if (rgb_matrix_is_enabled()) {  // turn the lights on when it is enabled.
         uint8_t layer = biton32(layer_state);
         switch (layer) {
@@ -250,5 +250,6 @@ void rgb_matrix_indicators_user(void) {
                 break;
         }
     }
+    return false;
 }
 #endif