feat(Core/Maps): Implement dynamic respawn rates (#21417)

Co-authored-by: r00ty-tc <r00ty-tc@users.noreply.github.com>
Co-authored-by: Jelle Meeus <sogladev@gmail.com>
Co-authored-by Treeston

This is a partial cherry-pick of: https://github.com/TrinityCore/TrinityCore/pull/19056/commits/59db2eeea0a35028779fd76372ae06cc98c8086f

src/server/game/Entities/Creature/Creature.cpp

@@ -1974,6 +1974,7 @@ void Creature::setDeathState(DeathState state, bool despawn)
     if (state == DeathState::JustDied)
     {
         m_corpseRemoveTime = GameTime::GetGameTime().count() + m_corpseDelay;
+        GetMap()->ApplyDynamicModeRespawnScaling(this, m_respawnDelay);
         m_respawnTime = GameTime::GetGameTime().count() + m_respawnDelay + m_corpseDelay;
 
         // always save boss respawn time at death to prevent crash cheating

src/server/game/Entities/GameObject/GameObject.cpp

@@ -897,6 +897,7 @@ void GameObject::Update(uint32 diff)
                     return;
                 }
 
+                GetMap()->ApplyDynamicModeRespawnScaling(this, m_respawnDelayTime);
                 m_respawnTime = GameTime::GetGameTime().count() + m_respawnDelayTime;
 
                 // if option not set then object will be saved at grid unload

src/server/game/Entities/Player/PlayerUpdates.cpp

@@ -1245,9 +1245,7 @@ void Player::UpdateArea(uint32 newArea)
 void Player::UpdateZone(uint32 newZone, uint32 newArea)
 {
     if (!newZone)
-    {
         return;
-    }
 
     if (m_zoneUpdateId != newZone)
     {
@@ -1264,6 +1262,8 @@ void Player::UpdateZone(uint32 newZone, uint32 newArea)
             guild->UpdateMemberData(this, GUILD_MEMBER_DATA_ZONEID, newZone);
     }
 
+    GetMap()->UpdatePlayerZoneStats(m_zoneUpdateId, newZone);
+
     // group update
     if (GetGroup())
         SetGroupUpdateFlag(GROUP_UPDATE_FULL);