Windows: Disable shader disk cache for Intel HD Graphics 620

Set Qt::AA_DisableShaderDiskCache when the feature "disable_program_cache"
(modeled after the Chromium driver bug list) is present and set it for the
Intel HD Graphics 620 card.

Task-number: QTBUG-64697
Change-Id: Ibba588d2ab296b5c959ab8ee9712b47ec7cc906e
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>