Use same padding as source icons for extensions

app/src/main/res/layout/extension_card_item.xml

@@ -10,11 +10,13 @@
         android:id="@+id/image"
         android:layout_width="0dp"
         android:layout_height="0dp"
-        android:padding="12dp"
+        android:paddingStart="16dp"
+        android:paddingEnd="8dp"
         app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintDimensionRatio="h,1:1"
+        app:layout_constraintDimensionRatio="1:1"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent"
+        tools:ignore="ContentDescription"
         tools:src="@mipmap/ic_launcher_round" />
 
     <TextView