fix(Core/Spell): spell immunity system and new separate immunities table (#24956)

Co-authored-by: ariel- <ariel-@users.noreply.github.com>
Co-authored-by: Keader <keader.android@gmail.com>
Co-authored-by: Shauren <shauren.trinity@gmail.com>

src/server/game/Entities/Pet/Pet.cpp

@@ -491,7 +491,7 @@ bool Pet::LoadPetFromDB(Player* owner, uint32 petEntry, uint32 petnumber, bool c
         }
 
         // must be after SetMinion (owner guid check)
-        //LoadTemplateImmunities();
+        LoadTemplateImmunities(0);
         //LoadMechanicTemplateImmunity();
         m_loading = false;
     });