Greygreed Inventory Toolkit 2.5.28

- Rebuilt Bank Expansion Labels Only as a standalone bank-rendering module.
- Expansion Labels Only now preempts normal bank label rendering, clears all other GreyGreed labels and item levels, and draws only the expansion label.
- Kept bank-only handling scoped to visible bank roots, bank-owned candidates, tracked bank buttons, and cached GreyGreed bank candidates.
- Added safer refresh handling when toggling Expansion Labels Only so checked and unchecked states force visible bank buttons to redraw.
- No unrelated AutoLoot, AutoVend, profession, gear marker, or Inventory Utility behavior was intentionally changed.
