Bookings API: save the pass type and park image on the booking

Related: https://github.com/bcgov/reserve-rec-public/issues/687

**Bug:** the API saves the pass type from the wrong record. `bookings/methods.js` reads `product.activitySubType` — products don't have that field, activities do. So it saves nothing, and every booking is missing its pass type.

**Two changes:**
1. Read the pass type from the activity record, not the product.
2. Return the park image (`geozoneImageUrl`) on bookings, the same way the park name already is.

**Why it matters:** with both on the booking, the My bookings page needs one API call instead of three — the ~1 second delay before the image and pass type appear goes away.

Start in bookings/methods.js, where the booking currently reads the pass type and returns the park name. Trace the activity and product records and the existing park-name response, then verify that bookings contain the activity pass type and geozoneImageUrl so the client can obtain both from one API call.

Written by the indexing model from the issue text.