🐛 Fix manage_heaters recursion on servo move (#22313)

Followup to e297748b22

Marlin/src/module/temperature.cpp

@@ -1203,6 +1203,10 @@ void Temperature::min_temp_error(const heater_id_t heater_id) {
 void Temperature::manage_heater() {
   if (marlin_state == MF_INITIALIZING) return watchdog_refresh(); // If Marlin isn't started, at least reset the watchdog!
 
+  static bool no_reentry = false;  // Prevent recursion
+  if (no_reentry) return;
+  REMEMBER(mh, no_reentry, true);
+
   #if ENABLED(EMERGENCY_PARSER)
     if (emergency_parser.killed_by_M112) kill(M112_KILL_STR, nullptr, true);