[Crossgen2] PInvoke stubs with EH blocks cause a runtime assert when an exception is thrown

[fadimounir]

Simple repro (make NativeMethod2 throw a divide-by-zero exception):

        [DllImport("nativelib")]
        public extern static int NativeMethod1(int a);
        [DllImport("nativelib")]
        [MethodImpl(MethodImplOptions.NoInlining)]
        public extern static int NativeMethod2(int a);
        [DllImport("nativelib")]
        [MethodImpl(MethodImplOptions.NoInlining)]
        public extern static int NativeMethod3(int a);

        static void TestPInvokeSimple()
        {
            for (int i = 0; i < 4; i++)
            {
                var a = NativeMethod1(1);
                Console.WriteLine("NativeMethod1 = " + a);

                try
                {
                    a = NativeMethod2(0);
                    Console.WriteLine("NativeMethod2 = " + a);
                }
                catch (Exception ex) 
                {
                    Console.WriteLine(ex); 
                }

                a = NativeMethod3(1);
                Console.WriteLine("NativeMethod3 = " + a);
            }
        }

Causes the following assert after the catch block executes:

Assert failure(PID 20440 [0x00004fd8], Thread: 4548 [0x11c4]): false

CORECLR! ExceptionTracker::UpdateNonvolatileRegisters + 0x17B (0x00007fff`0284fa0b)
CORECLR! FixNonvolatileRegisters + 0x287 (0x00007fff`028430a7)
CORECLR! ProcessCLRException + 0xE43 (0x00007fff`02852683)
NTDLL! chkstk + 0x19F (0x00007fff`8e5c127f)
NTDLL! RtlUnwindEx + 0x522 (0x00007fff`8e53da32)
CORECLR! ClrUnwindEx + 0x88 (0x00007fff`0283e768)
CORECLR! ProcessCLRException + 0xBE1 (0x00007fff`02852421)
NTDLL! chkstk + 0x11F (0x00007fff`8e5c11ff)
NTDLL! RtlRaiseException + 0x399 (0x00007fff`8e58a289)
NTDLL! KiUserExceptionDispatcher + 0x2E (0x00007fff`8e5bfe6e)
    File: D:\GIT\runtime\src\coreclr\src\vm\exceptionhandling.cpp Line: 494