Fixes the add/remove icon turning into a check icon when clicking (#1779)

Author: keianhzo

app/src/main/res/drawable/ic_icon_language_add.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
     <item android:drawable="@drawable/ic_icon_add" android:state_hovered="true" />
-    <item android:drawable="@drawable/ic_icon_check" android:state_pressed="true" />
+    <item android:drawable="@drawable/ic_icon_add" android:state_pressed="true" />
+    <item android:drawable="@android:color/transparent" />
 </selector>

app/src/main/res/drawable/ic_icon_language_delete.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
     <item android:drawable="@drawable/ic_icon_delete" android:state_hovered="true" />
-    <item android:drawable="@android:color/transparent" android:state_pressed="true" />
+    <item android:drawable="@drawable/ic_icon_delete" android:state_pressed="true" />
+    <item android:drawable="@android:color/transparent" />
 </selector>