IOStore : Packaged game crashes when doing garbage collection right after cancelling async loading by UnloadPrimaryAssetList

Packaged game without IOStore never hits this error.

1. Download the repro project based on the ShooterGame from [Link Removed]
2. Build the project with ue4.26
3. Build packaged game with following commandline (please modify paths for your environment)

   E:\dev\ue426\Engine\Build\BatchFiles\RunUAT.bat ScriptsForProject=D:\dev\ue426Projects\ShooterGame425\ShooterGame425.uproject BuildCookRun -project=D:/dev/ue426Projects/ShooterGame425/ShooterGame425.uproject -noP4 -clientconfig=Development -serverconfig=Development -nocompileeditor -ue4exe=E:\dev\ue426\Engine\Binaries\Win64\UE4Editor-Cmd.exe -utf8output -platform=Win64 -targetplatform=Win64 -build -cook -map= -unversionedcookedcontent -encryptinifiles -pak -iostore -manifests -compressed -stage -package -cmdline=" -Messaging" -compile
   

1. Launch the packaged game
2. After launching game, Quickly press the 1 and 2 keys on the keyboard alternately in main menu (see [Link Removed])

Result:
The game crashes and displays error dialog

Assertion failed: false [File:E:/dev/ue426/Engine/Source/Runtime/CoreUObject/Private/Serialization/AsyncLoading2.cpp] [Line: 1147] 
Package /Game/Effects/Textures/Air/T_cloud_1 destroyed with RefCount

> ShooterGame.exe!FPackageStore::RemovePackage(FPackageId PackageId, UPackage * Package) Line 1147 C++ Symbols loaded.> ShooterGame.exe!FPackageStore::RemovePackage(FPackageId PackageId, UPackage * Package) Line 1147 C++ Symbols loaded.  ShooterGame.exe!FPackageStore::RemovePackages(const TArray<TTuple<FName,UPackage *>,TSizedDefaultAllocator<32>> & Packages) Line 1177 C++ Symbols loaded.  ShooterGame.exe!FAsyncLoadingThread2::RemoveUnreachableObjects(const TArray<TTuple<int,UObject *>,TSizedDefaultAllocator<32>> & PublicExports, const TArray<TTuple<FName,UPackage *>,TSizedDefaultAllocator<32>> & Packages) Line 5132 C++ Symbols loaded.  ShooterGame.exe!FAsyncLoadingThread2::NotifyUnreachableObjects(const TArrayView<FUObjectItem *,int> & UnreachableObjects) Line 5164 C++ Symbols loaded.  ShooterGame.exe!NotifyUnreachableObjects(const TArrayView<FUObjectItem *,int> & UnreachableObjects) Line 719 C++ Symbols loaded.  ShooterGame.exe!CollectGarbageInternal(EObjectFlags KeepFlags, bool bPerformFullPurge) Line 2041 C++ Symbols loaded.  ShooterGame.exe!TryCollectGarbage(EObjectFlags KeepFlags, bool bPerformFullPurge) Line 2177 C++ Symbols loaded.  ShooterGame.exe!UEngine::ConditionalCollectGarbage() Line 1365 C++ Symbols loaded.  ShooterGame.exe!UWorld::Tick(ELevelTick TickType, float DeltaSeconds) Line 1657 C++ Symbols loaded.  ShooterGame.exe!UGameEngine::Tick(float DeltaSeconds, bool bIdleMode) Line 1794 C++ Symbols loaded.  ShooterGame.exe!FEngineLoop::Tick() Line 4836 C++ Symbols loaded.  [Inline Frame] ShooterGame.exe!EngineTick() Line 62 C++ Symbols loaded.  ShooterGame.exe!GuardedMain(const wchar_t * CmdLine) Line 169 C++ Symbols loaded.  ShooterGame.exe!GuardedMainWrapper(const wchar_t * CmdLine) Line 137 C++ Symbols loaded.  ShooterGame.exe!WinMain(HINSTANCE__ * hInInstance, HINSTANCE__ * hPrevInstance, char * _formal, int nCmdShow) Line 268 C++ Symbols loaded.  [Inline Frame] ShooterGame.exe!invoke_main() Line 102 C++ Symbols loaded.  ShooterGame.exe!_scrt_common_main_seh() Line 288 C++ Symbols loaded.

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