Merge pull request #1877 from RocketChat/fix/onboarding-screen-being-cut-off

[FIX] onbording being cut off on some resolutions.

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

-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
@@ -7,6 +7,10 @@
     android:padding="@dimen/screen_edge_left_and_right_margins"
     tools:context="authentication.onboarding.ui.OnBoardingFragment">
 
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content">
+
         <ImageView
             android:id="@+id/image_on_boarding"
             android:layout_width="wrap_content"
@@ -168,4 +172,5 @@
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toTopOf="parent" />
-</androidx.constraintlayout.widget.ConstraintLayout>
+    </androidx.constraintlayout.widget.ConstraintLayout>
+</ScrollView>
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