fix: fixed splash screen on huawei

Fixed white color around app icon on splash screen on huawei by adding icon_background_color property

Author: OMaudza

android/app/src/main/res/values-night-v31/styles.xml

@@ -7,6 +7,7 @@
         <item name="android:windowDrawsSystemBarBackgrounds">false</item>
         <item name="android:windowLayoutInDisplayCutoutMode">shortEdges</item>
         <item name="android:windowSplashScreenBackground">#123752</item>
+        <item name="android:windowSplashScreenIconBackgroundColor">#123752</item>
     </style>
     <!-- Theme applied to the Android Window as soon as the process has started.
          This theme determines the color of the Android Window while your

android/app/src/main/res/values-v31/styles.xml

@@ -7,6 +7,7 @@
         <item name="android:windowDrawsSystemBarBackgrounds">false</item>
         <item name="android:windowLayoutInDisplayCutoutMode">shortEdges</item>
         <item name="android:windowSplashScreenBackground">#123752</item>
+        <item name="android:windowSplashScreenIconBackgroundColor">#123752</item>
     </style>
     <!-- Theme applied to the Android Window as soon as the process has started.
          This theme determines the color of the Android Window while your

tool/configs/flutter_native_splash.yaml

@@ -3,3 +3,4 @@ flutter_native_splash:
   image: "tool/assets/native_splash/image.png"
   android_12:
     color: "#123752"
+    icon_background_color: "#123752"