SupportsShouldProcess doesn't care for WhatIfPreference

Summary of the new feature
It seems the SupportShouldProcess rule doesn't always pick up WhatIf being passed to a function later on. It mostly does this for external modules (that do it properly), but not when the functions are within the same module (different files) that I am actually building.

Proposed technical implementation details (optional)
I guess a prescan should be made and if there are commands with explicit WhatIf calls or WhatIfPreference calls it should treat it as condition to ignore.

Comece reproduzindo o comportamento de SupportsShouldProcess com WhatIfPreference sendo passado entre funções no mesmo módulo e, em seguida, inspecione a regra SupportsShouldProcess e como ela trata os limites entre módulos. O trabalho estará concluído quando o uso explícito de WhatIf ou WhatIfPreference em funções do mesmo módulo for reconhecido de forma consistente, sem falsos positivos.