CASH-1790: add refs for self-documenting clarity

src/layouts/schedule/time-slot-question/time-slot-question.vue

@@ -1,6 +1,7 @@
 <template>
     <div class="time-slots-question">
         <buttonQuestion
+            ref="chooseDropOffOrInshop"
             v-if="isDropOffAppointmentAvailable"
             v-model="selectedAnswerForDropOffOrInshop"
             @update:modelValue="dropOffSelectionChanged"
@@ -23,8 +24,9 @@
             </div>
         </buttonQuestion>
         <buttonQuestion
-            ref="buttonQuestion"
-            v-if="shouldDisplayTimeSlotQuestion"
+            ref="chooseTimeSlot"
+            v-if="displayTimeSlotQuestion"
+            v-model="selectedAnswerForTimeSlots"
             @update:modelValue="timeSlotSelectionChanged"
             buttonTypeString="timeSlotModalListButton"
             :buttonTypeObject="timeSlotModalListButton"