[PT Run] Localized file paths (Part 1): Update helper class and Program plugin (#20024)

* make helper non-static and add cache

* uwp app: add localized path

* Win32Program: Rename variable

* spell fix

* Win32Program: Localized paths

* fix invalid var name

* spell fix

* fix build

* test new shell localization helper

* fixes

* fix crash

* replace old helper class

* replace old helper class 2

* Helper improvements

* last changes

* add docs info

* remove left-over

* remove second left-over