Workaround Fan PercentSetting float error (2nd)

Use integer multiply & devide to workaround floating
point precision error which causes incorrect Fan PercentSetting
value after ceil calculation.

Author: erwinpan1

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

@@ -346,9 +346,9 @@ void MatterFanControlClusterServerAttributeChangedCallback(const app::ConcreteAt
             VerifyOrReturn(EMBER_ZCL_STATUS_SUCCESS == status,
                            ChipLogError(Zcl, "Failed to get SpeedSetting with error: 0x%02x", status));
 
-            float percent = percentSetting.Value();
-            // Minus insignificant number 0.00000001 before ceil() to avoid floating point precision error
-            uint8_t speedSetting = static_cast<uint8_t>(ceil(speedMax * (percent * 0.01) - 0.00000001));
+            uint16_t percent = percentSetting.Value();
+            // Plus 99 then devide by 100 instead of multiplying 0.01 to workaround floating point precision error
+            uint8_t speedSetting = static_cast<uint8_t>(ceil((speedMax * percent + 99) / 100));
 
             if (currentSpeedSetting.IsNull() || speedSetting != currentSpeedSetting.Value())
             {