Python 3.8: use native Python for altered search path workaround in NVDAHelper module

[LeonarddeR]

Is your feature request related to a problem? Please describe.

de NVDAHelper module loads the NVDAHelper library with an altered search path.

Describe the solution you'd like

Python 3.8 has add_dll_directory and exposes the winmode parameter, so we should be able to do this natively now.

Describe alternatives you've considered

Leave as is

[josephsl]

Hi,

A variant of this (a new issue) is seen with libluis.dll.

Thanks.

[Adriani90]

@LeonarddeR is this still relevant?

[Adriani90]

@josephsl, @seanbudd is this issue still relevant? Or can it be closed?

[josephsl]

Hi,

This is superseded by Python 3.11 upgrade work.