Unify buzz methods as MarlinUI::buzz (#14803)

Marlin/src/module/printcounter.cpp

@@ -157,6 +157,8 @@ void PrintCounter::loadStats() {
     #endif
     #if HAS_BUZZER && SERVICE_WARNING_BUZZES > 0
       if (doBuzz) for (int i = 0; i < SERVICE_WARNING_BUZZES; i++) BUZZ(200, 404);
+    #else
+      UNUSED(doBuzz);
     #endif
   #endif // HAS_SERVICE_INTERVALS
 }

Marlin/src/module/temperature.cpp

@@ -68,7 +68,7 @@
   #include "tool_change.h"
 #endif
 
-#if HAS_BUZZER && PIN_EXISTS(BEEPER)
+#if USE_BEEPER
   #include "../libs/buzzer.h"
 #endif
 
@@ -749,7 +749,7 @@ int16_t Temperature::getHeaterPower(const heater_ind_t heater_id) {
 
 inline void loud_kill(PGM_P const lcd_msg) {
   Running = false;
-  #if HAS_BUZZER && PIN_EXISTS(BEEPER)
+  #if USE_BEEPER
     for (uint8_t i = 20; i--;) {
       WRITE(BEEPER_PIN, HIGH); delay(25);
       WRITE(BEEPER_PIN, LOW); delay(80);