Seats holding, booking, blocking inconsistencies resolution

apps/edr-passenger-api/prisma/schema.prisma

@@ -1312,6 +1312,7 @@ model NotificationTemplate {
 model SeatBlock {
   id         String    @id @default(uuid())
   seatId     String
+  scheduleId String?
   reason     String
   blockedBy  String
   approvedBy String?
@@ -1320,6 +1321,7 @@ model SeatBlock {
   seat       Seat      @relation(fields: [seatId], references: [id])
 
   @@index([seatId])
+  @@index([scheduleId])
   @@schema("passenger")
 }