Expose noResolveAliases property in showOpenDialog

[kimadeline]

The Python extension offers the ability to select a Python interpreter via a dialog (added in microsoft/vscode-python#11227).

When using virtual environments the interpreter is just a symlink to a global install of Python, and selecting it in the dialog resolves the symlink instead of returning the selected interpreter:

As pointed out in the original report at microsoft/vscode-python#13603 by @matangover, Electron has a noResolveAliases option for showOpenDialog which would solve this problem, however it isn't exposed in the API.