Fix hostile simplemob rotation (#20900)

Content.Server/CombatMode/CombatModeSystem.cs

@@ -1,7 +1,12 @@
+using Content.Server.NPC.HTN;
 using Content.Shared.CombatMode;
 
 namespace Content.Server.CombatMode;
 
 public sealed class CombatModeSystem : SharedCombatModeSystem
 {
+    protected override bool IsNpc(EntityUid uid)
+    {
+        return HasComp<HTNComponent>(uid);
+    }
 }