Instant crash during stage 1 analysis when a native architecture hook is registered

[WeiN76LQh]

Version and Platform (required):

• Binary Ninja Version: 5.3.9138-dev Ultimate (546385d4)
• Edition: Ultimate
• OS: macOS
• OS Version: 26.3
• CPU Architecture: M1

Bug Description:
A recent change seems to have broken native ArchitectureHook plugins. By registering a completely barebones architecture hook that doesn't replace any functionality, Binary Ninja crashes immediately when the first stage analysis begins.

Steps To Reproduce:
Please provide all steps required to reproduce the behavior:

1. Compile the native plugin provided below
2. Open any arm64 binary in Binary Ninja
3. Observe immediate crash once analysis begins

Binary:

#include "binaryninjaapi.h"

using namespace BinaryNinja;
class arm64ArchitectureExtension : public ArchitectureHook {
public:
    arm64ArchitectureExtension()
        : ArchitectureHook(Architecture::GetByName("aarch64"))
    {
    }
};

extern "C" {
BN_DECLARE_CORE_ABI_VERSION

BINARYNINJAPLUGIN void CorePluginDependencies()
{
    AddRequiredPluginDependency("arch_arm64");
}

BINARYNINJAPLUGIN bool CorePluginInit()
{
    Architecture* arm64ext = new arm64ArchitectureExtension();
    Architecture::Register(arm64ext);
    return true;
}
}