[K/N] Use mimalloc for kotlin objects only ^KT-52130

Merge-request: KT-MR-5805
Merged-by: Alexander Shabalin <Alexander.Shabalin@jetbrains.com>

kotlin-native/runtime/src/main/cpp/Runtime.cpp

@@ -21,6 +21,7 @@
 #include "KAssert.h"
 #include "Memory.h"
 #include "ObjCExportInit.h"
+#include "ObjectAlloc.hpp"
 #include "Porting.h"
 #include "Runtime.h"
 #include "RuntimePrivate.hpp"
@@ -102,6 +103,7 @@ volatile GlobalRuntimeStatus globalRuntimeStatus = kGlobalRuntimeUninitialized;
 
 RuntimeState* initRuntime() {
   SetKonanTerminateHandler();
+  initObjectPool();
   RuntimeState* result = new (std_support::kalloc) RuntimeState();
   if (!result) return kInvalidRuntime;
   RuntimeCheck(!isValidRuntime(), "No active runtimes allowed");