fix(Core/Unit): add melee spell breaking for spells with cast time (#19376)

melee spells breaking

src/server/game/Entities/Unit/Unit.cpp

@@ -3959,6 +3959,16 @@ void Unit::SetCurrentCastedSpell(Spell* pSpell)
                         InterruptSpell(CURRENT_AUTOREPEAT_SPELL);
                     m_AutoRepeatFirstCast = true;
                 }
+
+                // melee spells breaking
+                if (m_currentSpells[CURRENT_MELEE_SPELL])
+                {
+                    // break melee spells if cast time
+                    if (pSpell->GetCastTime() > 0)
+                    {
+                        InterruptSpell(CURRENT_MELEE_SPELL);
+                    }
+                }
                 if (pSpell->GetCastTime() > 0)
                     AddUnitState(UNIT_STATE_CASTING);