hide scroll-to-bottom upon click

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>
Signed-off-by: Marcel Hibbe <dev@mhibbe.de>

app/src/main/java/com/nextcloud/talk/controllers/ChatController.kt

@@ -673,7 +673,11 @@ class ChatController(args: Bundle) :
             }
         }
 
-        binding?.scrollDownButton?.setOnClickListener { binding?.messagesListView?.scrollToPosition(0) }
+        binding?.scrollDownButton?.setOnClickListener {
+            binding?.messagesListView?.scrollToPosition(0)
+            it.visibility = View.GONE
+        }
+
         binding?.let { viewThemeUtils.material.colorMaterialButtonPrimaryTonal(it.scrollDownButton) }
 
         binding?.let { viewThemeUtils.material.colorMaterialButtonPrimaryFilled(it.popupBubbleView) }