Add EUR (Euro) as a supported currency for upsells

Problem Statement:

• Upsells are not available in EUR currency
• Customers on EUR billing cannot offer or purchase upsells in their local currency

Current Workaround:

• None — customers simply cannot use upsells in EUR

Impact:

• Lost revenue from EUR-based guests
• Inconsistent pricing experience for European customers
• Manual workarounds needed

Proposed Solution:

• Add EUR as a supported currency option for upsells in Hospitable's settings

Unlock:

• Hosts can offer upsells in EUR, providing a seamless experience for European guests and increasing upsell adoption