Generate overrides attempts to override methods that are not supported in C#/VB

Version Used: 26717.1.d15rel

Steps to Reproduce: Scenario B07 - Generate overrides Generate overrides tries to override methods containing modopts and generates code that won't compile. It shouldn't offer to override these methods.

1. Create a Managed C++ dll with the following code:

using namespace System;
public ref class Test
{
public:
    virtual int TestFunc(const Test a)
    {
        return 0;
    }
};

2. Create a C# Console app with following code:

public class Test2 : Test
{
}

3. Reference the dll create in step 1.
4. "Generate overrides" on Test2

Expected Behavior: Generate overrides shouldn't offer to override TestFunc.

Actual Behavior: TestFunc shows up as a function available to generate an override for and the parameter list is missing. If you go ahead and generate the override, this is the resulting (incorrect) code:

    public override int TestFunc(object a)
    {
        return base.TestFunc(a);
    }