IAsyncDisposable.DisposeAsync should call and await 'DisposeAsyncCore' and call 'Dispose(false)'

[RalfKoban]

Excerpt from https://learn.microsoft.com/en-us/dotnet/standard/garbage-collection/implementing-disposeasync :

The public parameterless DisposeAsync() method is called implicitly in an await using statement, and its purpose is to free unmanaged resources, perform general cleanup, and to indicate that the finalizer, if one is present, need not run.

Freeing the memory associated with a managed object is always the domain of the garbage collector. Because of this, it has a standard implementation:

public async ValueTask DisposeAsync()
{
    // Perform async cleanup.
    await DisposeAsyncCore();

    // Dispose of unmanaged resources.
    Dispose(false);

    // Suppress finalization.
    GC.SuppressFinalize(this);
}