fix: DataExportSection error

- Fixed improper referencing for PlatformServiceMixin
- Fixed case where exported data has no contact methods

authored-by: Matthew Raymer <matthew.raymer@anomalistdesign.com>

src/components/DataExportSection.vue

@@ -178,8 +178,8 @@ export default class DataExportSection extends Vue {
     try {
       this.isExporting = true;
 
-      // Fetch contacts from database using database utility
-      const allContacts = await this.$databaseUtil.getContacts();
+      // Fetch contacts from database using mixin's cached method
+      const allContacts = await this.$contacts();
 
       // Convert contacts to export format
       const processedContacts: Contact[] = allContacts.map((contact) => {
@@ -187,8 +187,10 @@ export default class DataExportSection extends Vue {
         const exContact: Contact = R.omit(["contactMethods"], contact);
         // now add contactMethods as a true array of ContactMethod objects
         exContact.contactMethods = contact.contactMethods
-          ? JSON.parse(contact.contactMethods as string)
-          : undefined;
+          ? (typeof contact.contactMethods === 'string' && contact.contactMethods.trim() !== '' 
+              ? JSON.parse(contact.contactMethods) 
+              : [])
+          : [];
         return exContact;
       });