Merge branch 'scheduler_skip_add_no_change' into integration

esphome/core/scheduler.cpp

@@ -357,6 +357,9 @@ void HOT Scheduler::call(uint32_t now) {
   const auto now_64 = this->millis_64_(now);  // 'now' from parameter - fresh from Application::loop()
   this->process_to_add();
 
+  // Track if we add any interval items during this call
+  bool added_intervals = false;
+
 #ifdef ESPHOME_DEBUG_SCHEDULER
   static uint64_t last_print = 0;
 
@@ -510,10 +513,14 @@ void HOT Scheduler::call(uint32_t now) {
         // Timeout completed - recycle it
         this->recycle_item_(std::move(item));
       }
+
+      added_intervals |= this->to_add_.empty() == false;
     }
   }
 
+  if (added_intervals) {
     this->process_to_add();
+  }
 }
 void HOT Scheduler::process_to_add() {
   LockGuard guard{this->lock_};