Changes made for Pathfinder V5 PC's.

Made the variant prompts re-fire on every config selection instead of only on first load, with the current choice pre-selected so confirming is one click. Added a preselectedItem parameter to RadioSelectionDialog and a forceReprompt flag on both Ensure methods in ApplicationManager.cs — false keeps the existing load-path safety net, true always prompts and treats Cancel as "keep current selection." A new PromptVariantsAfterConfigSelection() helper refreshes the cached store and runs both Ensure methods with the force flag, wired into both SetCurrentConfig UI sites (initial pick and change-config-with-restart). Same value picked = no disk write, no refresh.