Core/SAI: Fix SMART_ACTION_WP_RESUME actually pausing next waypoint if the current path was not paused

Port From (https://github.com/TrinityCore/TrinityCore/commit/eb17e94b2e0059edeb747cb03e6828a746a2c0b8)

Source/Game/AI/SmartScripts/SmartAI.cs

@@ -181,6 +181,17 @@ namespace Game.AI
             GetScript().ProcessEventsFor(SmartEvents.WaypointPaused, null, _currentWaypointNode, GetScript().GetPathId());
         }
 
+        public bool CanResumePath()
+        {
+            if (!HasEscortState(SmartEscortState.Escorting))
+            {
+                // The whole resume logic doesn't support this case
+                return false;
+            }
+
+            return HasEscortState(SmartEscortState.Paused);
+        }
+
         public void StopPath(uint despawnTime = 0, uint quest = 0, bool fail = false)
         {
             if (!HasEscortState(SmartEscortState.Escorting))

Source/Game/AI/SmartScripts/SmartScript.cs

@@ -1403,7 +1403,8 @@ namespace Game.AI
                         break;
 
                     // Set the timer to 1 ms so the path will be resumed on next update loop
-                    ((SmartAI)_me.GetAI()).SetWPPauseTimer(1);
+                    if (((SmartAI)_me.GetAI()).CanResumePath())
+                        ((SmartAI)_me.GetAI()).SetWPPauseTimer(1);
                     break;
                 }
                 case SmartActions.SetOrientation: