fix themed icon

FCL/src/main/AndroidManifest.xml

@@ -53,7 +53,7 @@
         android:networkSecurityConfig="@xml/network_security_config"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
-        android:roundIcon="@mipmap/ic_launcher_round"
+        android:roundIcon="@mipmap/ic_launcher"
         android:supportsRtl="true"
         android:largeHeap="true"
         android:usesCleartextTraffic="true"

FCL/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@drawable/ic_launcher_background"/>
+    <background android:drawable="@color/icon_background_color"/>
     <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
+    <monochrome android:drawable="@mipmap/ic_launcher_foreground"/>
 </adaptive-icon>

FCL/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -1,5 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@drawable/ic_launcher_background"/>
-    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
-</adaptive-icon>

FCL/src/main/res/values-v31/colors.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="icon_background_color">@android:color/system_accent1_0</color>
+</resources>

FCL/src/main/res/values/colors.xml

@@ -4,4 +4,5 @@
     <color name="black">#FF000000</color>
     <color name="white">#FFFFFFFF</color>
     <color name="ui_bg_color">#4DBCBCBC</color>
+    <color name="icon_background_color">#FFFFFF</color>
 </resources>