Allow separate listing admin invites per property for multi-owner accounts

Problem Statement:

• Hospitable's listing admin invite system assumes all listings belong to one Airbnb account
• Management companies with multiple owners cannot send separate invites to different owners for different properties
• The system sends all listing admin invites to a single person, even when properties have different owners

Current Workaround:

• Manually sending invites to the wrong owner and hoping they ignore it
• No way to assign or invite different listing admins per property within the same account

Impact:

• Listings cannot be properly connected to their correct owners
• Calendar syncing, settings edits, and reviews won't work properly for unconnected listings
• Messaging and reservations may not sync correctly
• Management companies are unable to properly onboard multiple owners

Proposed Solution:

• Allow management companies to assign different listing admins (owners) to individual properties
• Enable separate invites per listing to different owners within the same account
• Provide a way to manage which owner is connected to which property

Unlock:

• Management companies can properly onboard and manage multiple owners
• Each listing can be connected to its correct Airbnb account
• Full functionality (calendar sync, messaging, reviews) works for all listings