refactor: optimization of OT requests for CH2

src/OpenThermTask.h

@@ -1038,7 +1038,8 @@ protected:
     }
 
     // Set CH2 temp
-    if (vars.master.ch2.enabled && !settings.opentherm.nativeHeatingControl) {
+    if (!settings.opentherm.nativeHeatingControl && vars.master.ch2.enabled) {
+      if (settings.opentherm.heatingCh1ToCh2 || settings.opentherm.dhwToCh2) {
         // Converted target CH2 temp
         float convertedTemp = convertTemp(
           vars.master.ch2.targetTemp,
@@ -1061,6 +1062,7 @@ protected:
         }
       }
     }
+  }
 
   void initialize() {
     // Not all boilers support these, only try once when the boiler becomes connected