fix(Core): Ritual animations (#19602)

Channel the same spell as the original caster when clicking on a ritual
portal, but ignore the effects of the spell.

Co-authored-by: killerwife <killerwife@gmail.com>

src/server/game/Spells/SpellDefines.h

@@ -148,6 +148,7 @@ enum TriggerCastFlags
     TRIGGERED_FULL_MASK                             = 0x0007FFFF,   //! Used when doing CastSpell with triggered == true
     TRIGGERED_IGNORE_EQUIPPED_ITEM_REQUIREMENT      = 0x00080000,   //! Will ignore equipped item requirements
     TRIGGERED_NO_PERIODIC_RESET                     = 0x00100000,   //! Periodic aura tick wont be reset on override
+    TRIGGERED_IGNORE_EFFECTS                        = 0x00200000,   //! Ignore spell effects - used for ritual portals
     TRIGGERED_FULL_DEBUG_MASK                       = 0xFFFFFFFF
 };