CASH-152: fixes to avoid null checks on service package question and quote modals

src/digital-components/modal/modal.vue

@@ -135,7 +135,7 @@ export default {
         },
         closeModal() {
             const modal = Modal.getInstance(document.getElementById(this.modalId));
-            modal.hide();
+            modal?.hide();
             this.$emit("isModalOpened", false);
         },
     },

src/fmg-components/save-progress-modal-question/save-progress-modal-question.vue

@@ -56,7 +56,7 @@ export default {
     },
     unmounted() {
         // remove any modal effects before leaving page (e.g. user hits browser back button)
-        this.modal.closeModal();
+        this.modal?.closeModal();
     },
     computed: {
         buttonText() {