[nrf fromtree] When dimming a light/bulb over time or changing color the thread network can be spammed (#31778)

* Adding diff

* Restyled by clang-format

---------

Cherry picked commit: 935aa450

Co-authored-by: Restyled.io <commits@restyled.io>

Author: 2 people

src/app/clusters/color-control-server/color-control-server.cpp

@@ -2565,6 +2565,24 @@ void ColorControlServer::updateTempCommand(EndpointId endpoint)
 
     isColorTempTransitionDone = computeNewColor16uValue(colorTempTransitionState);
 
+    if (!isColorTempTransitionDone)
+    {
+        // Check whether our color temperature has actually changed.  If not, do
+        // nothing, and wait for it to change.
+        uint16_t currentColorTemp;
+        if (Attributes::ColorTemperatureMireds::Get(endpoint, &currentColorTemp) != EMBER_ZCL_STATUS_SUCCESS)
+        {
+            // Why can't we read our attribute?
+            return;
+        }
+
+        if (currentColorTemp == colorTempTransitionState->currentValue)
+        {
+            scheduleTimerCallbackMs(configureTempEventControl(endpoint), TRANSITION_UPDATE_TIME_MS.count());
+            return;
+        }
+    }
+
     Attributes::RemainingTime::Set(endpoint, colorTempTransitionState->timeRemaining);
 
     if (isColorTempTransitionDone)