Whats Next? 0.19.1 - My Loot navigation highlight fix

- Fixed MY LOOT opening correctly but not receiving the selected state in the left navigation.
- Loot Browser and My Loot share one frame; navigation now follows the effective LootViewMode.
- Navigation selection is refreshed after each Loot Tracker rebuild.
- Hover/leave state uses the same effective navigation state, preventing the selected highlight from disappearing.
