use lighter color for dark theme reaction chip background

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

app/src/main/res/values-night/colors.xml

@@ -66,6 +66,7 @@
     <color name="textColorMaxContrast">#8c8c8c</color>
 
     <color name="nc_message_incoming_reaction_text_color">#FFFFFF</color>
+    <color name="bg_message_own_reaction">#29ffffff</color>
 
     <!-- shimmer element colors -->
     <color name="nc_shimmer_default_color">#4B4B4B</color>