fix: delay ox_inventory load until character registration completes in non-multicharacter

Delay ox_inventory load until character identity is set (non-multicharacter)
Inventory was loading before firstName were assigned to new
characters when multicharacter was disabled.

Fix/Changes:
* Check if multicharacter is disabled (Config.Multichar)
* Identify new characters (isNew flag)
* Wait for firstName to be registered
* Implement 2-minute timeout to prevent infinite loops
* Log warning if registration fails to complete in time
* Continue loading inventory anyway after timeout

Ensures identity data loads before inventory initializes

[core]/es_extended/server/main.lua

@@ -354,11 +354,22 @@ function loadESXPlayer(identifier, playerId, isNew)
     if not Config.CustomInventory then
         xPlayer.triggerEvent("esx:createMissingPickups", Core.Pickups)
     elseif setPlayerInventory then
-        if not Config.Multichar and isNew and not xPlayer.get("firstName") and not xPlayer.get("lastName") then
-			while not xPlayer.get("firstName") and not xPlayer.get("lastName") do
-				Wait(3000)
-			end
-		end
+        -- Wait for identity to be set before loading inventory (for non-multichar)
+        if not Config.Multichar and isNew and not xPlayer.get("firstName") then
+            local sleep = 5000
+            local registrationTimeout = 120 * 1000 -- 2 minutes
+
+            while not xPlayer.get("firstName") do
+                registrationTimeout = registrationTimeout - sleep
+
+                if registrationTimeout <= 0 then
+                    print(('[^3WARNING^7] Player ^5"%s"^7 Registration Timeout Reached (Loading Inventory Anyway).'):format(xPlayer.getName()))
+                    break
+                end
+
+                Wait(sleep)
+            end
+        end
         setPlayerInventory(playerId, xPlayer, userData.inventory, isNew)
     end