Smart guest count handling in Multi-Property Search, Suggest multiple properties when no single listing matches

When a guest uses the multi-property search widget and enters a number of guests that no single property can accommodate for the selected dates, instead of returning a "No availability" result, the widget should: - Suggest splitting the group across multiple properties, if available. - Display a combination of available listings that can collectively accommodate the full group. Highlighting those options could prevent missed booking opportunities and create a more seamless booking experience