refactor(Core/Creature): Remove Inhabit Type (#9272)

This is in reference to issue: https://github.com/azerothcore/azerothcore-wotlk/issues/4361
This is comprised of a cherry pick and partial tc cherry pick:
https://github.com/TrinityCore/TrinityCore/commit/592516ae69d89da3bcb0ede144644a3d2e0186e0
https://github.com/TrinityCore/TrinityCore/commit/dbadb6369cf0b6d394fffaa1dedc612dfb5cbe2a
https://github.com/TrinityCore/TrinityCore/commit/34cfa69efd1857540f1f44b118086bb02334c100
https://github.com/TrinityCore/TrinityCore/commit/12de860b4aefc02cc77b7487ef218fb584cdb552
https://github.com/TrinityCore/TrinityCore/commit/a22bc236ebc038c723774e5b38cd93e814ccc43d

src/server/game/Combat/HostileRefMgr.cpp

@@ -94,6 +94,19 @@ void HostileRefMgr::setOnlineOfflineState(bool isOnline)
     }
 }
 
+//=================================================
+// The online / offline status is calculated and set
+
+void HostileRefMgr::updateThreatTables()
+{
+    HostileReference* ref = getFirst();
+    while (ref)
+    {
+        ref->updateOnlineStatus();
+        ref = ref->next();
+    }
+}
+
 //=================================================
 // The references are not needed anymore
 // tell the source to remove them from the list and free the mem

src/server/game/Combat/HostileRefMgr.h

@@ -59,6 +59,8 @@ public:
 
     HostileReference* getFirst() { return ((HostileReference*) RefMgr<Unit, ThreatMgr>::getFirst()); }
 
+    void updateThreatTables();
+
     void setOnlineOfflineState(bool isOnline);
 
     // set state for one reference, defined by Unit