[BUG FIX] Movement flag update called for bots while rooted (#1991)

Fix for the error "Attempted sending heartbeat with root flag for guid"

The core does not allow movement flag updates when unit/player has the
MOVEMENTFLAG_ROOT flag. Change scope bots alone.

src/strategy/actions/FishingAction.cpp

@@ -417,7 +417,8 @@ bool FishingAction::Execute(Event event)
     {
         float angle = bot->GetAngle(pos.GetPositionX(), pos.GetPositionY());
         bot->SetOrientation(angle);
-        bot->SendMovementFlagUpdate();
+        if (!bot->IsRooted())
+            bot->SendMovementFlagUpdate();
     }
 
     EquipFishingPoleAction equipAction(botAI);