Core/Misc: Fix FreezeDetector triggered on startup

Fix FreezeDetector triggering the assert on startup if scripts took more than a few seconds to initialize.

src/server/worldserver/Main.cpp

@@ -91,7 +91,7 @@ class FreezeDetector
 {
     public:
         FreezeDetector(Trinity::Asio::IoContext& ioContext, uint32 maxCoreStuckTime)
-            : _timer(ioContext), _worldLoopCounter(0), _lastChangeMsTime(0), _maxCoreStuckTimeInMs(maxCoreStuckTime) { }
+            : _timer(ioContext), _worldLoopCounter(0), _lastChangeMsTime(getMSTime()), _maxCoreStuckTimeInMs(maxCoreStuckTime) { }
 
         static void Start(std::shared_ptr<FreezeDetector> const& freezeDetector)
         {