Small layout improvement

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

@@ -4,6 +4,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
+    android:fadeScrollbars="false"
     android:padding="12dp"
     android:scrollbarStyle="outsideOverlay"
     tools:context="eu.faircode.email.ActivityWidget">

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

@@ -4,6 +4,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
+    android:fadeScrollbars="false"
     android:padding="12dp"
     android:scrollbarStyle="outsideOverlay"
     tools:context="eu.faircode.email.ActivityWidgetSync">

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

@@ -4,6 +4,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
+    android:fadeScrollbars="false"
     android:padding="12dp"
     android:scrollbarStyle="outsideOverlay"
     tools:context="eu.faircode.email.ActivityWidgetUnified">