Multi-sub transition cinematic, linkedsubs don't have to be docked to the main sub when leaving (being at the same exit is enough), resetting item/serverlog listbox scroll when filtering the list

Subsurface/Source/Networking/ServerLog.cs

@@ -120,6 +120,8 @@ namespace Barotrauma.Networking
                 textBlock.Visible = textBlock.Text.ToLower().Contains(text);
             }
 
+            listBox.BarScroll = 0.0f;
+
             return true;
         }