Fix colortemp ability for Paulmann RGBW Light (#3239)

lib/extension/homeassistant.js

@@ -801,7 +801,7 @@ const mapping = {
     '4058075816794': [cfg.light_brightness_colortemp],
     '4052899926158': [cfg.light_brightness],
     '4058075036185': [cfg.light_brightness_colortemp_colorxy],
-    '50049': [cfg.light_brightness_colorxy],
+    '50049': [cfg.light_brightness_colortemp_colorxy],
     '915005733701': [cfg.light_brightness_colortemp_colorxy],
     'RB 285 C': [cfg.light_brightness_colortemp_colorxy],
     '3216331P5': [cfg.light_brightness_colortemp],