Smoother Skyblock trading on Bedrock

Skyblock merchant menus now move reliably from Sell or Buy to resource and quantity selection on Bedrock.

• Bedrock players no longer get trapped behind a server-data loading screen while navigating the Skyblock merchant.
• Sell and Buy now move cleanly through resource selection, quantity selection, and the final result.
• Closing or receiving an invalid native form response now releases that menu correctly, so it can be reopened immediately.
• Duplicate interaction signals are safely coalesced, and outdated merchant characters are consolidated automatically.
• Java inventory menus keep their existing loading and transaction safeguards.