[wasm][coreclr] Assembly.GetExecutingAssembly() returns null

[radekdoulik]

Repro

using System.Reflection;

Console.WriteLine("execution assembly: " + Assembly.GetExecutingAssembly());
if (Assembly.GetExecutingAssembly() == null)
{
    Console.WriteLine("execution assembly is null");
}
else if (string.IsNullOrEmpty(Assembly.GetExecutingAssembly().ToString()))
{
    Console.WriteLine("execution assembly to string is empty");
}
else
{
    Console.WriteLine("execution assembly location: " + Assembly.GetExecutingAssembly().Location);
}

outputs

execution assembly: 
execution assembly location is null

On wasm with corerun

This also fails in InterpreterTester runtime test.

[radekdoulik]

We need to implement BOOL IsInCalleesFrames(REGDISPLAY *display, LPVOID stackPointer) for this to work.