Cannot compile a nativized Blueprint with a function that takes an interface as an input parameter and uses it inside the function (e.g. dynamic cast to object).

Issue occurs because there is a legacy code path that forces all interface parameters to be declared as 'const' in function declarations, even if CPF_ConstParm is not set in exported C++ code. This case conflicts with our unsupported 'const ref' term type in Blueprint functions, and is handled for native C++ APIs that are overridden, but not for non-native Blueprint functions, which is how it manifests here.

1. Open the attached project (4.25).
2. Attempt to package it for Win64 (inclusive nativization is already enabled).
3. A C++ compile error will result after cooking, but before packaging is complete:
   D:/dev/local/Projects/NatInterfaceTest/Intermediate/Plugins/NativizedAssets/Windows/Game/Source/NativizedAssets/Private/BP_A__pf1010915279.cpp(533): error C2662: 'UObject *&FScriptInterface::GetObjectRef(void)': cannot convert 'this' pointer from 'const TScriptInterface<IBP_Interface_C>' to 'FScriptInterface &'
   UATHelper: Packaging (Windows (64-bit)): D:/dev/local/Projects/NatInterfaceTest/Intermediate/Plugins/NativizedAssets/Windows/Game/Source/NativizedAssets/Private/BP_A__pf1010915279.cpp(533): note: Conversion loses qualifiers
   UATHelper: Packaging (Windows (64-bit)): D:\dev\UE4\Dev-Framework\Engine\Source\Runtime\CoreUObject\Public\UObject/ScriptInterface.h(61): note: see declaration of 'FScriptInterface::GetObjectRef'
   UATHelper: Packaging (Windows (64-bit)):
   UATHelper: Packaging (Windows (64-bit)): Error executing D:\dev\UE4\Dev-Framework\Engine\Build\Windows\cl-filter\cl-filter.exe (tool returned code: 2)

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