fix(Scripts/Misc): Adjust points from old wrong 0 based indexing to smart ai indexing (#23472)

src/server/scripts/EasternKingdoms/BlackrockMountain/BlackrockSpire/boss_rend_blackhand.cpp

@@ -234,7 +234,7 @@ public:
             {
                 switch (id)
                 {
-                    case 5:
+                    case 6:
                         events.ScheduleEvent(EVENT_TELEPORT_1, 2s);
                         break;
                 }

src/server/scripts/EasternKingdoms/BlackrockMountain/BlackwingLair/boss_ebonroc.cpp

@@ -44,7 +44,7 @@ public:
 
         void MovementInform(uint32 type, uint32 id) override
         {
-            if (type != WAYPOINT_MOTION_TYPE || id != 12)
+            if (type != WAYPOINT_MOTION_TYPE || id != 13)
             {
                 return;
             }

src/server/scripts/EasternKingdoms/BlackrockMountain/BlackwingLair/boss_nefarian.cpp

@@ -592,12 +592,12 @@ struct boss_nefarian : public BossAI
             return;
         }
 
-        if (id == 3)
+        if (id == 4)
         {
             Talk(SAY_INTRO);
         }
 
-        if (id == 5)
+        if (id == 6)
         {
             DoCastAOE(SPELL_SHADOWFLAME_INITIAL);
             Talk(SAY_SHADOWFLAME);