Fix shuttle arrival visualizer (#35772)

* Fix shuttle arrival visualizer

It was at a fixed spot but if the target is rotating it wasn't handled.

* hew

* Fixes

Content.Server/Shuttles/Systems/DockingSystem.Shuttle.cs

@@ -79,7 +79,7 @@ public sealed partial class DockingSystem
             return false;
 
         shuttleDockedAABB = matty.TransformBox(shuttleAABB);
-        gridRotation = (targetGridRotation + offsetAngle).Reduced();
+        gridRotation = offsetAngle.Reduced();
         return true;
     }
 
@@ -125,7 +125,8 @@ public sealed partial class DockingSystem
     public DockingConfig? GetDockingConfigAt(EntityUid shuttleUid,
         EntityUid targetGrid,
         EntityCoordinates coordinates,
-        Angle angle)
+        Angle angle,
+        bool fallback = true)
     {
         var gridDocks = GetDocks(targetGrid);
         var shuttleDocks = GetDocks(shuttleUid);
@@ -140,6 +141,11 @@ public sealed partial class DockingSystem
             }
         }
 
+        if (fallback && configs.Count > 0)
+        {
+            return configs.First();
+        }
+
         return null;
     }