Added Booking Buttons to Builder Pages

Booking buttons and event lists now work inside Website Builder pages with full connected-app state. Blocks can receive collection information, initialise connected widgets when the app is enabled, and show the right booking options for the current page context.

Ticketing as composable page content

For editors, this turns ticketing actions into composable page content rather than a separate implementation step. A team can build an event detail page in the builder and expect the booking button to work correctly without any additional configuration outside the block.

The connected-app pattern

Blocks understand which ticketing and connected apps are installed for each organisation's site. They initialise the right experience based on what is actually configured, rather than requiring editors to manually specify identifiers.